Contra Costa Mosquito & Vector Control District

WHAT/WHY: Due to the high number of adult mosquitoes and the detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will fog by truck to control adult mosquitoes.

WHEN: Tuesday, September 15, 2009. Fogging will take place between dusk (approximately 7:20 p.m.) and 10:20 p.m., weather permitting.

Byron: The area to be treated is bordered on the west by Byron Highway (J4); California State Highway 4 on the north; Bixler Road and a line extending from the southern end of Newport Drive (along Kellogg Creek) to Camino Diablo on the east; and Camino Diablo from the eastern end to Byron Highway (J4) on the south.

Discovery Bay: The area to be treated is bordered on the west by Bixler Road; Lakeshore Circle, Castle Rock Loop to WIllow Lake Road and Marina Road and a line extending through Byron Tract to the Old River levee on the north; Willow Lake Road to Marina Road and Old River or the Contra Costa County border to California Delta Highway 4 on the east; with California Delta Highway 4 on the south.

Martinez: The area to be treated is bordered on the west by the Martinez city limits from the Union Pacific Railroad line to Hilmer Avenue; the Embarcadero Street and the Union Pacific Railroad line on the north; Estudillo Street to Arreba Street on the east side; and Arreba Street and Hilmer Street on the south.

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

FOG/SPRAY NOTIFICATIONS: People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by e-mail; they can view information on the District’s Web site; or they may phone the District for a recorded message at (925) 771-6195.

More West Nile Virus Activity: Three Dead Birds And A Chicken Confirmed Positive For The Virus In Contra Costa County

People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District's Web site and opt to receive the notifications automatically by e-mail; they can view information directly on the District's Web site; or they may phone the District for a recorded message at (925) 771-6195.

West Nile Virus Confirmed In Three More Dead Birds, Two Chickens, And A Squirrel In Contra Costa County

- Residents urged to wear mosquito repellent when enjoying outdoor activities -

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District announced today that three more dead birds, two chickens, and a squirrel have tested positive for West Nile virus. A single dead bird was found in each of the cities of Brentwood, Oakley, and Walnut Creek. The two sentinel chickens are located in Holland Tract (east of Oakley) and the squirrel was found in Walnut Creek.

WHEN: Friday, September 4, 2009. Fogging will take place between dusk (approximately 7:35 p.m.) and 10:30 p.m., weather permitting.

The area to be treated is bordered on the west by Discovery Bay Boulevard; Riverlake Road, Willow Lake Road and Marina Road and a line extending through Byron Tract to the Old River levee on the north; Old River or the Contra Costa County border to California Delta Highway 4 on the east; with California Delta Highway 4 on the south.

The area to be treated is bordered on the west by Byron Highway (J4); CA State Highway 4 on the north; Bixler Road and a line extending from the southern end of Bixler Road to Camino Diablo on the east; Camino Diablo from the eastern end to Byron Highway (J4) on the south

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

West Nile Virus Confirmed In Five More Dead Birds And A Chicken In Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District announced today that five more dead birds and a chicken have tested positive for West Nile virus. A single dead bird was found in each of the cities of Antioch, Brentwood, Byron, Discovery Bay and Oakley. The sentinel chicken is located in Oakley.

The Antioch bird was found at A and 18^th Streets; the Brentwood bird at Balfour Road and Walnut Boulevard; the Byron bird at Rankin Road and Byron Highway; the Discovery Bay bird at Highway 4 and Bixler Road; and the Oakley bird at Carol Lane and Main Street. The chicken is located near Walnut Meadows Drive and Vintage Parkway.

“Everyone needs to pay attention to their landscape watering so they don’t contribute to the catch basin water where mosquitoes thrive,” said Carlos Sanabria, operations manager for the District. “Catch basins are the second biggest source of mosquitoes at this time throughout the county, with neglected swimming pools still reigning as the number one source.”

Today’s report brings the total West Nile virus-positive vectors this year in Contra Costa County to 17 groups of mosquitoes, 24 dead birds and two sentinel chickens. According to the county health department’s Web site, there have been three human cases of West Nile virus in the county this year.

Residents are urged to wear mosquito repellents with the ingredients DEET, Picaridin or Oil of Lemon Eucalyptus. The public is also reminded to report neglected swimming pools or other water sources where mosquitoes emerge. Reports may be made anonymously.

To understand possible mosquito water sources in yards, visit the District’s Web site.

Most people who are bitten by a mosquito with West Nile virus will not get sick; however, up to 20 percent of the population infected with West Nile virus will get West Nile fever. West Nile fever causes people to experience mild to severe flu-like symptoms such as fever, headache, body ache and possible paralysis. Less than one percent of infected individuals will require hospitalization. The elderly and those with compromised immune systems are most susceptible to illness and death caused by West Nile virus.

Residents are urged to take the following precautions:

DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

DO vaccinate your horses. Horses are highly susceptible to West Nile virus - approximately half of the horses that get West Nile virus die or have to be euthanized.

DAWN and DUSK are times to avoid being outdoors since this is when mosquitoes are most active.

DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

DEAD birds should be reported to 877-WNV-BIRD (877-968-2473) or online at www.westnile.ca.gov. Not all birds will be picked up and tested, but reporting dead birds provides important information for mosquito control efforts.

People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by e-mail; they can view information on the District’s Web site; or they may phone the District for a recorded message at (925) 771-6195.

Contra Costa Mosquito & Vector Control District, a public health agency, is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195 or visit their office between 8:00 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Fish are also available at the Antioch Corporation Yard located at 1201 W. 4th Street in Antioch.

For information concerning human West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their Web site at http://cchealth.org.

For information concerning West Nile virus and horses, please call the California Department of Food and Agriculture Animal Health Branch at (916) 654-1447.

WHEN: Tuesday, August 25, 2009. Fogging will take place between dusk (approximately 7:50 p.m.) and 10:30 p.m., weather permitting.

The area to be treated is bordered on the west by Discovery Bay Blvd; Riverlake Rd, Willow Lake Rd and Marina Rd. and a line extending through Byron Tract to the Old River levee, on the north; Old River or the Contra Costa County border to California Delta Highway 4 on the east; with California Delta Highway 4 on the south.

The area to be treated is bordered on the north by Tule Lane, Rock Slough; Byron Highway to Eagle Lane on the east; Sunset Road from Byron Highway to Cunha Drive on the south; Knightsen Avenue south from Tule Lane, Curlew Connex and a line extending south to Sunset Road form the western edge.

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

West Nile Virus Confirmed in dead Birds and Mosquitoes in Brentwood, Discovery Bay, Oakley, and Pittsburg

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District announced today that four more dead birds and a group of mosquitoes have confirmed positive for West Nile virus in Contra Costa County. Two of the dead birds were found in Brentwood; one at Cesa Avenue and First Street and the other at Byron Highway and Orwood Road. One dead bird was from Walnut Drive in Oakley and another dead bird was found at Diehl Way and Suzanne Drive in Pittsburg. The group of mosquitoes was found at Highway 4 and Cherry Hills Drive in Discovery Bay.

"Due to the increased West Nile virus activity in east Contra Costa County and in San Joaquin County, there is an elevated risk in the delta area. Everyone should be using mosquito repellent when outdoors," said Steve Schutz, scientific programs manager for the District. "Especially those people who enjoy boating activities."

Today’s report brings the total West Nile virus-positive vectors this year in Contra Costa County to 16 groups of mosquitoes, 20 dead birds and one sentinel chicken. According to the county health department’s Web site, there have been two human cases of West Nile virus in the county this year; an adult woman and a young man, both of whom are recovering from the disease.

For information concerning West Nile virus and horses, please call the California Department of Food and Agriculture Animal Health Branch at (916) 654-1447.

Adult Mosquito Fogging Tuesday Evening at Holland Tract (East of Oakley) and Antioch

WHEN: Tuesday, August 11, 2009. Fogging will take place between dusk (approximately 8:00 p.m.) and 11:00 p.m., weather permitting.

Holland Tract: The treatment area begins after Becky’s Bridge located at the eastern end of Delta Road. Holland Tract Road, the levee road which encircles the tract, is the perimeter boundary of the treatment area.

Antioch: The area to be treated is bordered on the north by W. 6^th Street, E. 6^th St. and Wilbur Avenue; by Minaker Drive, E. 13th Street and Hillcrest Avenue on the east; Sunset Drive, A Street, Railroad Avenue, and W. 20^th Street on the south; G street is the western border edge.

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

West Nile Virus Confirmed in Dead Birds and Mosquitoes in Alamo, Antioch, and Brentwood

-- Contra Costa Mosquito & Vector Control District reminds residents to wear mosquito repellent--

CONCORD, CALIFORNIA - - Two dead birds, one each from Alamo and Brentwood, and two groups of mosquitoes from Antioch tested positive for West Nile virus the Contra Costa Mosquito and Vector Control District announced today. The Alamo bird was reported on July 21 and was found near Serafix Road and Livorna Road. The Brentwood bird was reported on August 4 and was found near Brentwood Boulevard and Sunset Road. Both groups of virus-positive mosquitoes were collected on August 4 near Cavallo Road and Wilbur Avenue in Antioch.

"Our technicians continue to work diligently, especially in these areas where people may become infected from mosquitoes with the virus," said Deborah Bass, spokeswoman for the District. "But, it’s important to remember that West Nile virus is endemic to Contra Costa County, and California for that matter, and to take the necessary precautions."

Today’s report brings the total of West Nile virus-positive vectors this year in Contra Costa County to 16 groups of mosquitoes and 15 dead birds. According to the state health department’s Web site, there has been one human case of West Nile virus in the county this year, a 66-year-old woman.

For information concerning West Nile virus and horses, please visit the California Department of Food and Agriculture Animal Health Branch at www.cdfa.ca.gov/ahgss/ah/wnv_info.htm or call them at (916) 654-1447.

WHEN: Wednesday, August 5, 2009. Fogging will take place between dusk (approximately 8:14 p.m.) and 10:30 p.m., weather permitting.

WHERE: Holland Tract (East of Oakley). The treatment area begins after Becky’s Bridge located at the eastern end of Delta Road. Holland Tract Road, the levee road which encircles the tract, is the perimeter boundary of the treatment area.

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

Chicken, Bird, and Mosquitoes Test Positive for West Nile Virus in Contra Costa County

CONCORD, CALIFORNIA - - A sentinel chicken from Holland Tract has tested positive for West Nile virus, the first this year in Contra Costa County. The Contra Costa Mosquito and Vector Control District is also reporting a group of mosquitoes from Holland Tract and a Cooper’s hawk from Danville that have tested positive for the virus.

"Virus-positive chickens are pretty significant," said Deborah Bass, spokeswoman for the District. "Chickens are kept in a coop, which tells us that the virus transmission from mosquitoes did indeed occur at a specific location."

So far this year there have been 14 groups of mosquitoes, 13 dead birds, and one chicken that have tested positive for West Nile virus in Contra Costa County.

Residents are urged to wear mosquito repellents with the ingredients DEET, Picaridin or Oil of Lemon Eucalyptus.

The public is reminded to also report neglected swimming pools or other water sources where mosquitoes emerge. Reports may be made anonymously.

– 40 percent reduction in reports hinder West Nile virus control efforts; eight more dead birds test positive for the virus –

CONCORD, CALIFORNIA - - Forty percent fewer dead bird reports mean 40 percent fewer clues as to where human cases of the virus may appear. Last year at this time 1,141 dead birds were reported compared to this year, 691 dead birds have been reported. The Contra Costa Mosquito and Vector Control District is urging residents to report dead birds to the state hotline at 877-WNV-BIRD.

“The dead bird reports are crucial to our surveillance and control efforts,” said Deborah Bass, spokeswoman for the District. “In essence, these reports help us to identify where people are most likely to get infected and therefore, where we should apply our efforts for maximum control of mosquitoes.”

Reports are made to the dead bird hotline that is part of the California Department of Public Health’s vector-borne disease section that feeds the data into a computer system known as DYCAST. The system creates a report based on dead bird clusters that have been helpful in determining where human cases may occur.

Today, the District is reporting eight more dead birds that have tested positive for West Nile virus. The dead birds were reported from the cities of Antioch, Brentwood, Richmond, Orinda, Danville, and Bay Point. The type of birds reported were a crow, an European Starling, a house finch, a flycatcher, an American Robin, a Lesser Goldfinch, a Western Scrub Jay, and a hawk.

So far this year, these birds bring the total positive West Nile virus dead bird count to 12 and there have been 13 samples of mosquitoes that tested positive as well in Contra Costa County.

Residents are urged to wear mosquito repellents with the ingredients DEET, Picaridin or Oil of Lemon Eucalyptus.

The public is reminded to also report neglected swimming pools or other water sources where mosquitoes emerge. Reports may be made anonymously.

Realtors And Mosquito Control Unite: Fighting West Nile Virus One Swimming Pool At A Time

– Partnership aims to fight disease by locating and treating mosquitoes in neglected swimming pools –

CONCORD, CALIFORNIA - - Realtors® find them, and mosquito control treats the mosquitoes in them. In a unique partnership, two Contra Costa County entities, Mosquito & Vector Control and the Contra Costa Association of Realtors®, have partnered to wage a war on neglected swimming pools that readily produce mosquitoes that can carry West Nile virus, a potentially debilitating and deadly disease spread by mosquitoes.

“Realtors® are the first line of defense, since they are usually the first to find neglected swimming pools that are virtually hidden in neighborhoods,” said Deborah Bass, spokeswoman for the Contra Costa Mosquito & Vector Control District. “Once we control the mosquitoes, residents are at decreased risk from contracting West Nile virus.”

Contra Costa County is one of the top California counties for home foreclosures, many of which have swimming pools. Neglected swimming pools account for most of the mosquito production in residential yards. One neglected swimming pool can produce more than 1 million mosquitoes and affect people as far away as five miles. Often, the swimming pools are hidden from public access and can be difficult to find.

“Reporting neglected swimming pools to Mosquito & Vector Control is the best solution for everyone,” said Steve Reiser, President of Contra Costa Association of Realtors®. “We want the properties under our care to be mosquito free, and they are the agency to ensure that. And it helps potential buyers to know that the swimming pool is free of mosquitoes as well.”

In addition to working together on neglected swimming pools, Mosquito and Vector Control provides the Realtors® with tailored presentations that educate them about the virus and the mosquitoes that carry the disease.

To learn more about the Contra Costa Association of Realtors®, visit www.ccartoday.com.

To learn more about Contra Costa Mosquito & Vector Control District, visit www.ccmvcd.dst.ca.us

The Contra Costa Association of REALTORS®, located in Central Contra Costa County, has been serving its members since 1921. The Association and its MLS are dedicated to providing the most innovative and highest quality services, programs, and products to positively impact the success of its members and MLS subscribers who provide real estate brokerage services to clients throughout the East Bay and beyond.

WHAT: New Partnership launch and West Nile virus presentation to the Contra Costa Association of Realtors (10 min.)

More Mosquitoes And Birds Test Positive For West Nile Virus In Contra Costa County

CONCORD, CALIFORNIA - - Another group of mosquitoes and three more dead birds were confirmed positive for West Nile virus in Contra Costa County. The mosquitoes were trapped near Lakewood Drive and Summer Lakes Drive in Oakley on July 13. Last week another group of mosquitoes were confirmed West Nile virus positive from the same location. The birds were found in Danville near Bordeaux Court and Tuscany Way; in Concord near St. George Drive and Port Chicago Highway; and in Martinez near Via El Dorado Lane and Howe Street.

“This hot weather coupled with standing water is the perfect environment for mosquitoes and increases the risk for contracting West Nile virus through their bites,” said Deborah Bass, spokeswoman for the District. “Besides wearing mosquito repellent, reporting standing water such as neglected swimming pools is critical to reducing your risk.”

Repellents with the ingredient DEET is highly recommended, along with repellents containing Picaridin or Oil of Lemon Eucalyptus.

The District uses surveillance information such as virus-positive mosquitoes and dead bird reports to concentrate their control efforts in areas where people have a higher risk of contracting the disease. The public is reminded to report neglected swimming pools or other water sources where mosquitoes emerge. Reports may be made anonymously.

To understand possible mosquito water sources in yards, visit the District’s Web site http://intranet.ccmvcd.net:8089/pdf/mosquito_proof_yard.pdf

Residents are urged to take the following precautions:

DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

DO vaccinate your horses. Horses are highly susceptible to West Nile virus - approximately half of the horses that get West Nile virus die or have to be euthanized.

DAWN and DUSK are times to avoid being outdoors since this is when mosquitoes are most active.

DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

WHEN: Thursday, July 16, 2009. Fogging will take place between dusk (approximately 8:30 p.m.) and 10:00 p.m., weather permitting.

WHERE: The area begins at the intersection of Bethel Island Road and East Cypress Road. The area to be sprayed is bordered by East Cypress Road on the north, by Sandmound Blvd. on the east, Harborage Court and Harborage Way on the south and Sycamore Drive on the west.

TREATMENT will be made with truck-mounted ultra -low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

– District reports twelfth West Nile virus-positive mosquito group in 2009 –

CONCORD, CALIFORNIA - - A group of mosquitoes was confirmed positive for West Nile virus yesterday, the twelfth such group this year in Contra Costa County. The mosquitoes were trapped near Lakewood Drive and Summer Lakes Drive in Oakley on July 7.

“Wearing mosquito repellent is extremely important,” said Deborah Bass, spokeswoman for the District. “Mosquitoes are capable of infecting anyone with West Nile virus with just a single bite.”

Repellents with the ingredient DEET is highly recommended, along with repellents containing Picaridin or Oil of Lemon Eucalyptus.

To understand possible mosquito water sources in yards, visit the District’s Web site http://intranet.ccmvcd.net:8089/pdf/mosquito_proof_yard.pdf

Residents are urged to take the following precautions:

· DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

· DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

· DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

· DO vaccinate your horses. Horses are highly susceptible to West Nile virus - approximately half of the horses that get West Nile virus die or have to be euthanized.

· DAWN and DUSK are times to avoid being outdoors since this is when mosquitoes are most active.

· DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

· DEAD birds should be reported to 877-WNV-BIRD (877-968-2473) or online at www.westnile.ca.gov. Not all birds will be picked up and tested, but reporting dead birds provides important information for mosquito control efforts.

West Nile Virus Season Official: Dead Bird Tests Positive For West Nile Virus In Contra Costa County

– District reports first West Nile virus positive bird in 2009; urges public to report all dead birds –

CONCORD, CALIFORNIA - - A dead Western scrub jay found in Alamo has tested positive for West Nile virus, the first positive dead bird documented in Contra Costa County this year. The bird was reported on June 28 and confirmed positive on July 8. Earlier this year, eleven mosquito samples tested positive for the virus, but the bird confirmed positive this week is the first evidence of West Nile virus transmission in the county this season.

“This dead bird is nature’s way of reminding us that West Nile virus should be taken seriously,” said Deborah Bass, spokeswoman for the District. “We all need to take the usual, but very important precautions of wearing mosquito repellent when outdoors and making sure we are not producing mosquitoes in our own yards.”

Dead bird reports help to pinpoint West Nile virus activity and allow vector control employees to concentrate their surveillance and control efforts in those areas. Residents are urged to report all dead birds to the West Nile virus hotline at 877-WNV-BIRD (877-968-2473) or online at www.westnile.ca.gov Not all birds can be picked up for testing, but the reports remain crucial to mosquito control efforts.

Most people who are bitten by a mosquito with WNV will not get sick; however, up to 20 percent of the population infected with WNV will get West Nile fever. West Nile fever causes people to experience mild to severe flu-like symptoms such as fever, headache, body ache and possible paralysis. Less than one percent of infected individuals will require hospitalization. The elderly and those with compromised immune systems are most susceptible to illness and death caused by WNV.

Residents are urged to take the following precautions:

· DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

· DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

· DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

· DO vaccinate your horses. Horses are highly susceptible to West Nile virus – approximately half of the horses that get WNV die or have to be euthanized.

· DAWN and DUSK are times to avoid being outdoor since this is when mosquitoes are most active.

· DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by email; they can view information on the District’s Web site; or they may phone the District for a recorded message at (925) 771-6195.

For information concerning West Nile virus and horses, please visit the California Department of Food and Agriculture Animal Health Branch at www.cdfa.ca.gov/ahfss/ah/wnv_info.htm or call them at (916) 654-1447.

Pesticide Spray Notification Efforts Garner Contra Costa Mosquito Control Innovation Award

– Bronze Anvil Award is from Public Relations Society of America's Northern California Competition –

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District won a Bronze Anvil award yesterday for their efforts to notify residents when fogging for adult mosquitoes in residential areas. The award was announced at the 2009 Northern California Public Relations Society of America’s Silver and Bronze Anvil Awards Competition in San Francisco yesterday.

The District utilizes the online newsletter service by Constant Contact as a notification system in order to deliver permission-based, automatic e-mails to subscribers wishing to learn when and where the District fogs or sprays for mosquitoes.

“We’re very pleased to have found a solution that works well for our residents and still enables us to respond quickly to protect public health,” said Craig Downs, general manager with the District. “Our swift action to control mosquitoes doesn’t always fit the time line for traditional communication methods. With the online notification system, the public and the media have everything they need soon after we make the decision to fog or spray for adult mosquitoes in residential areas.”

The online notifications include the time and place of the spray efforts, detailed street maps, links to the pesticide used as well as many other important links. Daily efforts to control mosquito larva or adult mosquitoes in non-residential areas are routine and no notification is given.

“The way in which the District uses Constant Contact is truly creative and unique. Using it on a regular basis to notify their constituents about spray dates and locations is truly innovative; a use for our product not seen before in our business,” said Stu Carty of Constant Contact.

Bronze Anvil Awards recognize outstanding public relations tactics. Other finalists and award recipients in this year’s Silver and Bronze Anvil Awards competition included Bank of America, Hewlett Packard, Kaiser Permanente, Charles Schwab, Greyhounds Line, Inc., Liberty Mutual, Ketchum Public Relations, Levi Strauss, Edelman, and more.

People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the free notifications automatically by email, they can view information on the District Web site, or they may phone the District for a recorded message at (925) 771-6195.

Contra Costa Mosquito & Vector Control District is a non-profit, public health agency that has been protecting public health since 1927.

Four More Groups Of Mosquitoes Test Positive For West Nile Virus In Contra Costa County

CONCORD, CALIFORNIA - - Four additional groups of mosquitoes tested positive for West Nile virus last week bringing the total in Contra Costa County to seven so far this year. Two groups were trapped in Pittsburg near Railroad Avenue and East Leland Road; one group was trapped in Bay Point near San Marco Boulevard and California Delta Highway 4; and one group was trapped in Pinole near Tennent Avenue and San Pablo Avenue

“The combination of hot weather and infected mosquitoes creates a heightened risk to people,” said Deborah Bass, spokeswoman for the District. “Wearing mosquito repellent while outdoors is very important. It only takes one bite from an infected mosquito to possibly contract West Nile virus.”

The District is asking residents to please continue to report dead birds to the hotline since those reports are crucial to their surveillance and control efforts.

Since the arrival of West Nile virus in Contra Costa County in 2004, 27 people have been documented with the disease and two have died. Most people who are bitten by a mosquito with WNV will not get sick; however, up to 20 percent of the population infected with WNV will get West Nile fever. West Nile fever causes people to experience mild to severe flu-like symptoms such as fever, headache, body ache and possible paralysis. Less than one percent of infected individuals will require hospitalization. The elderly and those with compromised immune systems are most susceptible to illness and death caused by WNV.

Residents are urged to take the following precautions:

· DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

· DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

· DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

· DO vaccinate your horses. Horses are highly susceptible to West Nile virus – approximately half of the horses that get WNV die or have to be euthanized

· DAWN and DUSK are times to avoid being outdoor since this is when mosquitoes are most active.

· DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

· DEAD birds should be reported to the California Department of Public Health’s Dead Bird Hotline at 877-WNV-BIRD (877-968-2473) or on their Web site http://www.westnile.ca.gov/. Not all birds will be picked up and tested, but reporting dead birds provides crucial information for mosquito control efforts.

People wishing to be notified about adult mosquito fogging or spraying have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by email, they can view information on the District Web site, or they may phone the District for a recorded message at (925) 771-6195.

– District reminds public to wear mosquito repellant and report dead birds –

Last week, the first group of mosquitoes to test positive for West Nile virus in Contra Costa County this year was announced, nine weeks earlier than last year’s first group of infected mosquitoes.

“This mosquito species tends to stay in the tules, so the risk is mainly to people in and around the marsh areas,” said Deborah Bass, spokeswoman for the District. “Wearing mosquito repellent remains the best precaution people can take. We ask that residents please continue to report dead birds to the hotline since those reports are crucial to our surveillance and control efforts.”

One of the suspected mechanisms for the re-introduction of West Nile virus each year is that infected female mosquitoes 'hibernate' over the winter and emerge the next season to start the cycle again. One reason for the early emergence of infected mosquitoes this year could be the unusually warm weather we experienced in January when temperatures reached nearly 80 degrees.

Residents are urged to take the following precautions:

· DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

· DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

· DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

· DO vaccinate your horses. Horses are highly susceptible to West Nile virus – approximately half of the horses that get WNV die or have to be euthanized

· DAWN and DUSK are times to avoid being outdoor since this is when mosquitoes are most active.

· DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

Warm Winter Weather Cited For First-Of-The-Season Mosquitoes That Test Positive For West Nile Virus In Contra Costa County

– District reports first virus-positive mosquitoes for 2009; Nine weeks earlier than last year –

CONCORD, CALIFORNIA - - A group of mosquitoes trapped in Martinez on March 27 have tested positive for West Nile virus, the first virus-positive group in Contra Costa County this year, nine weeks earlier than the first positive mosquitoes last year, and the first time ever before infected birds have been found.

“The first virus-positive group of mosquitoes is significant,” said Deborah Bass, spokeswoman for the District. “It means that mosquitoes have the virus and are capable of infecting anyone of any age, at any time. Wearing mosquito repellent and maintaining or dumping outdoor water sources remain the best precautions people can take. Residents can also continue to report dead birds to the hotline which remain crucial to our surveillance and control efforts.”

One of the suspected mechanisms for the re-introduction of West Nile virus each year is that infected female mosquitoes 'hibernate' over the winter and emerge the next season to start the cycle again. One reason for the infected mosquitoes to emerge so early this year could be due to the unusual warm weather experienced in January when temperatures reached nearly 80 degrees.

· DEFEND yourself against mosquitoes by using a repellent with an effective active ingredient such as DEET, Picaridin or Oil of Lemon Eucalyptus. Make sure to follow label directions.

· DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be a big producer of mosquitoes in Contra Costa County.

· DOOR and window screens should fit tight and be in good repair. This will prevent mosquitoes from entering your home.

· DO vaccinate your horses. Horses are highly susceptible to West Nile virus – approximately half of the horses that get WNV die or have to be euthanized

· DAWN and DUSK are times to avoid being outdoor since this is when mosquitoes are most active.

· DRESS appropriately by wearing long sleeves and pants when outdoors and mosquitoes are present.

To learn if the District is spraying for adult mosquitoes in Contra Costa County, please visit the district’s Web site at www.ccmvcd.dst.ca.us or call the District at (925) 771-6195 for a recorded message. Adult mosquito spray notifications by email are also available by signing up on the Web site.

Contra Costa Mosquito & Vector Control District Wins Award For Pesticide Spray Notification Efforts

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District’s online notification system garnered them an award in the Best Use of Internet and New Media category in the 2008 Impact Awards from the League of American Communications Professionals.

The District utilizes the online newsletter service by Constant Contact, turning it into a notification system in order to deliver permission-based, automatic e-mails to subscribers wishing to learn when and where the District fogs or sprays for mosquitoes.

“As a public health agency, our District acts immediately upon learning that public health is at risk from mosquito-borne diseases,” said Craig Downs, general manager with the District. “Our swift action to control mosquitoes doesn’t always fit the time line for traditional communication methods. With the online notification system, the public and the media have everything they need at their fingertips soon after we make the decision to fog or spray for adult mosquitoes in residential areas.”

People wishing to be notified about adult mosquito fogging or spraying in residential areas have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the free notifications automatically by email, they can view information on the District Web site, or they may phone the District for a recorded message at (925) 771-6195.

Contra Costa Mosquito & Vector Control District is a non-profit, public health agency that has been protecting public health since 1927.

WHAT/WHY: Due to the high number of mosquitoes in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Friday, November 7, 2008. Fogging will take place between 6:00 a.m. and 6:45 a.m., weather permitting.

Area within the Richmond Chevron refinery known as the Demonstration Wetlands. It is bordered by Channel Street on the south, Xylene Street on the east, Wildcat or Herman Slough on the north. Thomas Bros coordinates : 588D4, 588D5, 588D6.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Scourge (resmethrin 4.14%) at a rate of 1.5 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

More Mosquitoes And A Chicken Test Positive For West Nile Virus In Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting one group of mosquitoes and a chicken that have tested positive this past week for West Nile virus in the county. The mosquitoes were from Pittsburg and the chicken was from Oakley.

In Contra Costa County to date this year, four people, 87 dead birds, 31 groups of mosquitoes, nine squirrels, 15 chickens, and three horses have tested positive for West Nile virus.

“Cooler overnight temperatures will work in our favor in terms of mosquito populations, but don’t put away that repellent yet,” said Deborah Bass, public affairs manager with the District. “We are still finding a significant amount of neglected swimming pools that have mosquitoes.”

The District is urging all residents to maintain water features in their yards and to report abandoned or neglected swimming pools. Abandoned or neglected swimming pools are a significant source of mosquitoes in Contra Costa County and each one can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius. Infected mosquitoes can transmit West Nile virus, a debilitating and potentially fatal disease.

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Mosquitofish are also available at City of Antioch Corporation Yard, 1201 W. 4^th Street, Antioch, CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

Dead birds should be reported to 877-WNV-BIRD (877-968-2473) or www.westnile.ca.gov . Not all birds will be picked up and tested, but reporting dead birds provides important information for mosquito control efforts.

WHAT/WHY: Due to the high number of mosquitoes and the detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Tuesday, October 28, 2008. Fogging will take place between dusk (approximately 6:15 p.m.) and 10:00 p.m., weather permitting.

The area bordered by Crestview Drive, from Frontage Road to Alta Vista Circle on the east, Alta Vista Circle and the southern edge of the Stoneman Park, southern end of Jacqueline Drive, Whispering Oaks Court and Dawnview Court on the south, Rancho Bernardo Drive and San Marco Boulevard on the west, and Highway 4 on the north.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 at a rate of .75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

WHEN: Friday, October 17, 2008. Fogging will take place between dusk (approximately 6:30 p.m.) and 9:30 p.m., weather permitting.

The property owned and operated by the Mirant Corporation just west of the City of Pittsburg city limits. The area is bordered by Pittsburg City limits on the east and West 10th Street and Willow Pass Road and Willow Creek on the south, the north-south slough 1.25 miles west of Willow Creek on the west and Mallard Slough on the north.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Scourge (4.14% resmethrin) at a rate of 1.5 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

WHEN: Monday, October 20, 2008. Fogging will take place between dusk (approximately 6:25 p.m.) and 9:30 p.m., weather permitting.

1) The area bordered by Crestview Drive on the east, Alta Vista Circle and the southern edge of the Stoneman Park on the south, Jacqueline Drive on the west and Highway 4 on the north.

2) The area bordered by Railroad Avenue on the east, Parkside Drive on the south, Poinsettia Avenue, Willow Creek on the north to the north-south city limits boundary of Pittsburg, along the shore to the Pittsburg Marina on the northside.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 at a rate of .75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

Third Horse, More Birds And Mosquitoes Test Positive For West Nile Virus In Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting one horse, three groups of mosquitoes and eight dead birds that have tested positive this past week for West Nile virus in the county. The horse, from Martinez, was euthanized. Three of the birds were from Brentwood, two were from Antioch, one was from Concord, and one was from Walnut Creek.

In Contra Costa County to date this year, four people, 87 dead birds, 30 groups of mosquitoes, nine squirrels, 14 chickens, and three horses have tested positive for West Nile virus.

“Many people are surprised to learn that the risk of contracting West Nile virus is still with us during the fall months” said Deborah Bass, public affairs manager with the District. “As long as the mosquitoes are present, so is the risk of contracting the disease.”

Fogging For Mosquitoes To Be Conducted Tomorrow Evening In Brentwood And Pittsburg

WHEN: Thursday, October 9, 2008. Fogging will take place between dusk (approximately 6:40 p.m.) and 10:30 p.m., weather permitting.

The area bordered by Crestview Drive on the east, Alta Vista Circle and the southern edge of the Stoneman Park on the south, Jacqueline Drive on the west, and Highway 4 on the north.

The area bordered by Sand Creek Road to the north, the Brentwood City limits (Sellers Avenue after Chestnut Street) to the east, Balfour Road on the south, and Brentwood Boulevard (Highway 4) on the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 at a rate of .75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

Second Horse, More Birds And Mosquitoes Test Positive For West Nile Virus In Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting one horse, one group of mosquitoes and six dead birds that have tested positive this past week for West Nile virus in the county. The horse and the mosquitoes were from Brentwood. Two of the birds were from Brentwood, two were from Antioch, one was from Concord, and one was from Danville. Brentwood remains a high risk area for West Nile virus infection in Contra Costa County.

In Contra Costa County to date this year, four people, 79 dead birds, 27 groups of mosquitoes, nine squirrels, 14 chickens, and two horses have tested positive for West Nile virus.

“This case is an important reminder to horse owners to get their horses vaccinated,” said Deborah Bass, public affairs manager with the District. “Horses are highly susceptible to the virus and nearly half of the horses who get this disease die.”

WHAT/WHY: Due to the high numbers of mosquitoes in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Thursday, October 2, 2008. Fogging will take place between dusk (approximately 6:50 p.m.) and 10:30 p.m., weather permitting.

WHERE: Martinez: the area bordered by North Court Street at Martinez Regional Shoreline Park on the west, the Carquinez Straits' Shoreline on the north, Amorco Road on the east, and Marina Vista on the south.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Resmethrin 4.14% applied at a rate of 1.5 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

– More mosquitoes, birds, squirrels and chickens test positive for West Nile virus –

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting seven birds, two groups of mosquitoes, two squirrels and nine chickens that have tested positive this past week for West Nile virus in the county. Two birds were from Brentwood, and one each was from Alamo, Antioch, Orinda, and Concord. The mosquitoes were from Antioch and Brentwood. The squirrels were from Antioch and Pleasant Hill. Six of the chickens were from Holland Tract and three were from Oakley. Antioch and Brentwood remain high risk areas for West Nile virus infection in Contra Costa County.

In Contra Costa County to date this year, four people, 73 dead birds, 26 groups of mosquitoes, nine squirrels, 13 chickens, and one horse have tested positive for West Nile virus. Forty one of those birds, 16 of the mosquito samples and six of the squirrels have been from Antioch.

“Mosquito season is still upon us,” said Deborah Bass, public affairs manager with the District. “Wearing mosquito repellent is as important as ever, especially at dawn and dusk.”

Fogging For Mosquitoes To Be Conducted Tomorrow Evening in Antioch, Brentwood, and Pittsburg

WHAT/WHY: Due to the high numbers of nuisance mosquitoes and the detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Tuesday, September 30, 2008. Fogging will take place between dusk (approximately 6:50 p.m.) and 10:30 p.m., weather permitting.

Antioch: The area bordered by Fredrickson Lane from Hansen Drive, east where it becomes Hamilton Drive to Dallas Ranch Road on the north; Dallas Ranch Road on the east; Prewett Ranch Drive and Domengine Way and Judsonville Drive on the south; with Judsonville Drive on the west.

Brentwood: The area bordered by Sand Creek Road to the north; Brentwood City limits to the east; 2nd Street and Chestnut Street to the south; and Highway 4 to the West.

Pittsburg: The area bordered by West Leland Road from Golf Club Road to Crestview Drive on the north; Crestview Drive on the east; the Contra Costa Canal on the south, and Pittsburg's Delta View Golf Course on the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site http://www.ccmvcd.dst.ca.usto see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

WHAT/WHY: Due to the high numbers of nuisance mosquitoes in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Thursday, September 25, 2008. Fogging will take place between 5 a.m. and sunrise (approximately 7 AM), weather permitting.

The area bordered by Hoffman Lane one quarter-mile west of Hwy J4 extending one and one quarter-mile mile east of Hwy J4, one quarter-mile east of Bixler Road on the north side; a line extending south from one quarter-mile east of Bixler road to three-quarters mile south of Camino Diablo on the east side; and a line extending from the eastern edge's southern end extending west one mile to one quarter-mile east of Union Pacific Railroad on the south side; a line extending one mile north from southwestern edge to Hwy J4 and following the Union Pacific Railroad north to the western end of Hannon Drive and then north to Hoffman Lane one-quarter mile west of Hwy J4 on the west side.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

– First horse, more birds and more mosquitoes test positive for WNV as well –

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting that three more people have tested positive for West Nile virus in the county. The first two people are from Brentwood; a girl under the age of 18 years and a 28-year-old woman. The third person is a 43-year-old woman from Oakley. All survived and are recovering.

The District is also reporting the first horse of 2008 that has tested positive for West Nile virus. The horse survived and is located in the Byron area, east of Brentwood. One group of mosquitoes from Pittsburg tested positive for the disease, as well as six dead birds, two from Antioch, two from Brentwood, one from Pittsburg, and one from Walnut Creek. Antioch and Brentwood remain high risk areas for West Nile virus infection in Contra Costa County.

In Contra Costa County to date this year, four people, 66 dead birds, 24 groups of mosquitoes, seven squirrels, four chickens, and one horse have tested positive for West Nile virus. Forty of those birds, 15 of the mosquito samples and five of the squirrels have been from Antioch.

“Over watering of lawns in residential and recreational park areas continue to be an issue in terms of mosquitoes,” said Deborah Bass, public affairs manager with the District. “We’re asking everyone to consider using less water and to inform our District of agricultural flooding activities.”

Dead birds should be reported to 877-WNV-BIRD (877-968-2473) or www.westnile.ca.gov. Not all birds will be picked up and tested, but reporting dead birds provides important information for mosquito control efforts.

WHAT/WHY: Due to the high numbers of nuisance mosquitoes in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Thursday, September 18, 2008. Fogging will take place between 5 a.m. and 6:55 a.m., weather permitting.

1.) Cornell Park, area bordered by Discovery Bay Boulevard on the west and north sides, Willow Lake Road on the east and Beaver Lane on the south.

2.) Point of Timber Elementary School, area bordered by Newport Drive on the west and south and Preston Drive on the west, Newbury Lane on the north, and Wilde Drive and Fareham Court on the east.

1.) A square area centered around the intersection of Byron Highway (J4) and Byer Road, extending east one quarter mile on Byer Road, extending south one-quarter mile on Byron Highway to San Joaquin Avenue and extending one-quarter mile west to the end of Hannon Drive.

2.) The length of Camino Diablo from Byron Highway (J4) east to the eastern end of Camino Diablo approximately 1.3 miles.

3.) A square mile area located approximately three-quarters of a mile east of Bixler Road and one-half mile south of California State Highway 4, opposite Discovery Bay Boulevard.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

WHAT/WHY: Due to the high number of nuisance mosquitoes, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Saturday, September 13, 2008. Fogging will take place at dawn (approximately 5:00 a.m.) and 7:00 a.m., weather permitting.

WHERE: Oakley: The area bordered by E. Cypress Road on the north, Sandmound Slough on the east, Rock Slough on the south, and Bethel Island Road on the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

WHAT/WHY: Due to the high numbers of mosquitoes and the detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Thursday, September 11, 2008. Fogging will take place between dusk (approximately 7:20 p.m.) and 9 p.m., weather permitting.

The area begins at the intersection of Sellers Avenue and Chestnut Street. The area is bordered by Sellers Avenue on the west and extends one quarter mile east on Chestnut Street, it extends to one quarter mile north of Chestnut Street and to one quarter mile south of Chestnut Street.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

Sentinel Chickens, More Birds Test Positive For West Nile Virus In Contra Costa County

– Antioch and Brentwood remain areas of high risk for West Nile virus infection –

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting two chickens and six dead birds that have tested positive for West Nile virus this past week. One of the chickens was from Holland Tract and one chicken was from Oakley. One of the birds was from Pittsburg, one was from Oakley, one was from Orinda, and three were from Brentwood. Antioch and Brentwood remain high risk areas for West Nile virus infection in Contra Costa County.

In Contra Costa County to date this year, one person, 57 dead birds, 23 groups of mosquitoes, five squirrels, and two chickens have tested positive for West Nile virus. Thirty-eight of those birds, 15 of the mosquito samples and all five squirrels have been from Antioch.

“Wearing mosquito repellent is important,” said Carlos Sanabria, operations manager with the District. “For everyone in Contra Costa County, but especially for residents in Brentwood where the West Nile virus risk area continues to expand.”

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Mosquitofish are also available at City of Antioch Corporation Yard, 1201 W. 4 Street, Antioch, CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

For information concerning human West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org. Human West Nile virus cases can be found at http://westnile.ca.gov/. For detailed information, please select WNV Reports link to the right of your screen. For information concerning West Nile virus and horses, please visit the California Department of Food and Agriculture Animal Health Branch at www.cdfa.ca.gov/ahfss/ah/wnv_info.htm or call them at (916) 654-1447.

Dead birds should be reported to 877-WNV-BIRD (877-968-2473) or www.westnile.ca.gov. Not all birds will be picked up and tested, but reporting dead birds provides important information for mosquito control efforts.

WHAT/WHY: Due to the high number of nuisance mosquitoes in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Thursday, September 4, 2008. Fogging will take place between 5:30 a.m. and 6:45 a.m., weather permitting.

The area bordered by Sandmound Boulevard on the north, Sandmound Boulevard on the east, Bethel Island Road on the west and Rock Slough on the south

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

– One person, more dead birds and mosquitoes test positive for the virus –

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting five dead birds and two groups of mosquitoes that have tested positive for West Nile virus this past week. Three of the five birds were from Antioch, one was from Brentwood and one was from Oakley. One of the two groups of mosquitoes was from Oakley and one group was from Knightsen. Antioch and Brentwood remain high risk areas for West Nile virus infection in Contra Costa County.

In Contra Costa County to date this year, one person, 51 dead birds, 23 groups of mosquitoes, and five squirrels have tested positive for West Nile virus. The person, a 56-year-old woman resides in Antioch. Thirty-eight of those birds, 15 of the mosquito samples and all five squirrels have been from Antioch.

“As people enjoy the last bit of summer outdoors, they need to take precautions against mosquito bites,” said Deborah Bass, public affairs manager with the District. “Wearing mosquito repellent at this time of year is like wearing your seatbelt at the Indianapolis 500 car race. You just do it.”

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Mosquitofish are also available at City of Antioch Corporation Yard, 1201 W. 4 Street, Antioch, CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

WHEN: Friday, August 29, 2008. Fogging will take place between 5:45 a.m. and 6:45 a.m., weather permitting.

WHERE: Oakley: Area bordered by Marsh Creek (Dutch Slough)to the west and north; the slough running north-south, extending north from the end of Sellers Avenue to the east and the Contra Costa Canal to the south. The area was previously known as Emerson's Dairy.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health

Risk Of West Nile Virus Infection Remains High In Eastern Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting ten dead birds and six groups of mosquitoes that have tested positive for West Nile virus this past week. Antioch, Brentwood and Oakley remain high risk areas for West Nile virus infection in Contra Costa County.

Three of the ten birds were from Antioch, three were from Brentwood, two were from Pittsburg, one was from Oakley, and one was from Knightsen. Four of the six groups of mosquitoes were from Antioch, one group was from Brentwood, and one group was from Oakley.

In Contra Costa County to date this year, 46 dead birds, 21 groups of mosquitoes, and five squirrels have tested positive for West Nile virus. Thirty-five of those birds, 15 of the mosquito samples and all five squirrels have been from Antioch. So far, no human cases have been reported.

The Contra Costa Mosquito & Vector Control District will conduct ground fogging for adult mosquitoes this evening in two areas in Antioch and in one area in Brentwood, weather permitting. For details, please visit the District's Web site at http://www.ccmvcd.dst.ca.us/adulticide.htm.

The District is urging all residents to maintain water features in their yards and to report abandoned or neglected swimming pools. Abandoned or neglected swimming are a significant source of mosquitoes in Contra Costa County and each one can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius. Infected mosquitoes can transmit West Nile virus, a debilitating and potentially fatal disease.

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Mosquitofish are also available at the City of Antioch Corporation Yard, 1201 W. 4th Street, Antioch CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

People wising to be notified about adult mosquito fogging or spraying have several options. They may visit the District's Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by email, they can view information on the District Web site, or they may phone the District for a recorded message at (925) 771-6195.

For information concerning West Nile virus and horses, please visit the California Department of Food and Agriculture Animal Health Branch at http://www.cdfa.ca.gov/AHFSS/Animal_Health/ or call them at (916) 654-1447.

Dead birds should be reported to 877-WNV-BIRD (877-968-2473) or www.westnile.ca.gov. Not all birds will be picked up and tested, but reporting dead birds provided important information for mosquito control efforts.

Fogging For Mosquitoes To Be Conducted In Two Areas In Antioch And One Area In Brentwood Tomorrow

– Current conditions indicate higher risk for West Nile virus transmission –

WHEN: Tuesday, August 26, 2008. Fogging will take place between dusk (approximately 7:45 p.m.) and midnight, weather permitting.

WHERE: Antioch (2 areas)

1. The area bordered by 6th Street, east of G Street to A Street and Wilbur Avenue on the north; Minaker Drive, E. 13th Street and Hillcrest Avenue on the east; Sunset Avenue to A Street, Railroad Ave and W. 20th on the south; and G Street from 18th Street to 6th Street on the west.

2. The area bordered by Fredrickson Lane and Mount Hamilton Drive on the north; Dallas Ranch Road on the east; Prewett Ranch Drive and Judsonville Drive with the associated courts included on the south; the Black Diamond development with Judsonville Drive being the western boundary.

Brentwood (1 area)

1. The area bordered by Sand Creek Parkway to the north; Brentwood city limits to the east; 2nd Street and Oak Street to the south; Highway 4 to the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

MEDIA OPPORTUNITIES: Visit the District Web site’s media page.

More Birds, Mosquitoes, and Squirrels Test Positive for West Nile Virus in Contra Costa County

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is reporting nine dead birds, one group of mosquitoes, and two squirrels that have tested positive for West Nile virus this past week. Antioch, Oakley, and Brentwood remain high risk areas for West Nile virus infection.

In Contra Costa County to date this year, 36 dead birds, 15 groups of mosquitoes, and five squirrels have tested positive for West Nile virus. Twenty-six of those birds, 11 of the mosquito samples and all five squirrels have been from Antioch. So far, no human cases have been reported.

-- Current conditions indicate higher risk for West Nile virus transmission --

WHEN: Wednesday, August 6, 2008. Fogging will take place between dusk (approximately 8:15 p.m.) and midnight, weather permitting.

1. Area bordered by Ridgerock Drive and Boulder Drive to the north, Rocky Point Drive and Eagleridge Drive to the east, and Lone Tree Drive to the southwest.

2. Area bordered by Gentrytown Drive to the west, Morton Way and South Francisco Way and Gatter Drive to the north, and G Street to the east; Contra Loma Regional Park and the Contra Costa Canal to the south.

1. Area bordered by Sand Creek Road to the north, Brentwood City limits to the east, 2nd Street and Oak Street to the south, Hwy 4 to the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

Mosquito District Urges Cooperation from Homeowners for Swimming Pool Inspections

-- Residents' reluctance often results in no access to potential mosquito-producing pools--

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District is urging residential swimming pool owners and renters to work cooperatively with District technicians in order to protect residents’ health. Abandoned or neglected swimming pools are a significant source of mosquitoes in Contra Costa County and each one can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius. Infected mosquitoes can transmit West Nile virus, a debilitating and potentially fatal disease.

"Residents are, in many cases, reluctant to work with us to solve mosquito problems for reasons varying between embarrassment to indifference," said Deborah Bass, public affairs manager with the Contra Costa Mosquito & Vector Control District. "We want them to know that we are here as a public health agency to assist them and work with them to provide a safer environment for everyone."

The District is also reporting 15 dead birds, five groups of mosquitoes, and one squirrel that tested positive for West Nile virus in the past week.

In Contra Costa County to date this year, 27 dead birds, 14 groups of mosquitoes, and three squirrels have tested positive for West Nile virus. Twenty of these birds, 10 of the mosquito samples and all three squirrels were from Antioch. So far, no human cases have been reported. High risk areas for West Nile virus infection still remain in Antioch, Brentwood, and Oakley.

--Contra Costa Mosquito & Vector Control announces new location for mosquitofish pick-up--

CONCORD, CALIFORNIA - - The City of Antioch is now hosting a second location for distribution of free mosquitofish given to the public in Contra Costa County for use in backyard water sources to combat mosquitoes. The City of Antioch is working in collaboration with the Contra Costa Mosquito & Vector Control District.

“We applaud City of Antioch officials in collaborating with us to set up this distribution point in the eastern portion of the county,” said Craig Downs, general manager with the Contra Costa Mosquito & Vector Control District. “We are working together to ensure that our residents have easy access to these fish that can protect their health.”

Mosquitofish or Gambusia affinis, a type of guppy, can be put in horse troughs, ornamental ponds, and abandoned or neglected swimming pools. “Green” swimming pools as they are often referred to, have become a great concern to District officials since these pools tend to produce mosquitoes that can transmit West Nile virus, a debilitating and potentially deadly disease. One unmaintained swimming pool can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius. About 100 mosquitofish are recommended for an average-sized neglected swimming pool.

Properly maintained pools that are chlorinated and have filtration will not produce mosquitoes. For owners wishing to drain their swimming pools, officials recommend homeowners contact their local wastewater treatment authority to properly dispose of the water. Officials also advise homeowners to consult their pool technician since some pools may become damaged if allowed to dry out. And if there are mosquitoes present, draining the water into the street, gutter, or storm drain simply spreads the mosquitoes underground throughout the community and makes them difficult, if not impossible, to control.

Every year, the Contra Costa Mosquito & Vector Control District produces about a million fish a year to aid in mosquito control. Used throughout the world, the fish are a natural, biological way to control mosquitoes. They are very efficient, too. Each fish can eat up to 500 mosquito larvae every day.

Homeowners are only allowed by law to place the mosquitofish in water sources on their property andnot in any waterway, even if it passes through their yard. The District follows strict guidelines set by the California Department of Fish and Game. Only trained and licensed personnel, such as District technicians, can put mosquitofish in areas outside of residential properties.

Contra Costa Mosquito & Vector Control District, a public health agency, is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds, horse troughs, swimming pools or other potential mosquito sources.

New Location Added: Mosquitofish are now available at Antioch Corporation Yard, 1201 W. 4th Street, Antioch, CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

Oakley Joins Antioch And Brentwood As High Risk Areas For West Nile Virus Infection In Contra Costa County

CONCORD, CALIFORNIA - - Two groups of mosquitoes trapped in Oakley have tested positive for West Nile virus, the Contra Costa Mosquito & Vector Control District announced today. In addition, four birds from Antioch have tested positive for the virus as well.

“Our surveillance data coupled with the state’s virus-modeling program help us identify areas of concern,” said Deborah Bass, public affairs manager with the Contra Costa Mosquito & Vector Control District. “Together, these tools enable us to concentrate our control efforts in areas where human cases may occur”.

In Contra Costa County to date this year, there have been twelve dead birds, eight groups of mosquitoes, and two squirrels that have tested positive for West Nile virus. So far this year, no human cases have been reported.

District officials continue to urge property owners to routinely check their yards, to dump mosquito water sources, and to properly maintain their water features. Abandoned or neglected swimming pools are especially worrisome as they can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius.

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 771-6195, or visit their office between 8 a.m. and 4:30 p.m. to get FREE mosquitofish for ornamental ponds or horse troughs. Mosquitofish are also available at Antioch Corporation Yard, 1201 W. 4th Street, Antioch, CA, Monday through Friday (except holidays) from 7 a.m. to 4 p.m.

WHEN: Wednesday, July 30, 2008. Fogging will take place between dusk (approximately 8:30 p.m.) and midnight, weather permitting.

1. Area bordered by Contra Costa canal on the north, Sellers Avenue on the east, E. Cypress Road on the south, and Marsh Creek on the west.

2. Area bordered by E. Cypress Road on the north, Sandmound Slough on the east, Rock Slough on the south, and Bethel Island Road on the west.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are registered with the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s Web site to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County.

Brentwood Joins Antioch As High Risk Areas For West Nile Virus Infection In Contra Costa County

CONCORD, CALIFORNIA - - Utilizing the state’s virus-modeling program, the Contra Costa Mosquito & Vector Control District has identified southeast Brentwood as a high risk area for West Nile virus (WNV) infection. The area is Central Boulevard to the north, Guthrie Lane to the east, Creek Road and Claremont Drive to the west, and Payne Avenue to the south. Antioch remains at high risk for WNV infection as well. In addition, virus-positive dead birds from Antioch and Walnut Creek, as well as two virus-positive squirrels from Antioch are being reported.

“Utilizing a modeling system to predict where human cases may occur is a huge advantage,” said Deborah Bass, public affairs manager with the Contra Costa Mosquito & Vector Control District. “It allows our District to put forth a concentrated effort into the high risk areas in our county in order to protect our residents’ health”.

In Contra Costa County to date this year, there have been eight dead birds (one from Alamo, one from Knightsen, one from Walnut Creek, and five from Antioch), six groups of mosquitoes (one from Holland Tract and five from Antioch), and two squirrels from Antioch that have tested positive for West Nile virus. So far this year, no human cases have been reported.

Contra Costa Mosquito & Vector Control To Treat Antioch For Adult Mosquitoes

CONCORD, CALIFORNIA - - West Nile virus (WNV) has been detected in adult mosquitoes prompting the Contra Costa Mosquito & Vector Control District to fog by trucks due to the immediate risk of disease transmission to people. Fogging will take place on Thursday, July 17 between 8:30 p.m. and midnight, weather permitting. In addition, three groups of mosquitoes and three dead birds collected last week in Antioch have tested positive for the virus.

"Intensive larval mosquito control since March has reduced, but not eliminated, the risk of West Nile virus to the public in this area of the county,” said Deborah Bass, public affairs manager with the Contra Costa Mosquito & Vector Control District. “We are working with City of Antioch officials to reduce the risk of this disease in our community.”

Treatment will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 applied at a rate of 0.75 ounces per acre. Three areas in Antioch will be treated. The first location is bordered by Putnam Street on the north, Contra Loma Boulevard on the east, Gentrytown Drive on the west, and all of the residential area of Mira Vista Hills Park on the south. The second area is bordered by Wilbur Avenue on the north, Hillcrest Avenue on the east, A Street on the west, and E. 18^th Street on the south. The third location is bordered by Ridgerock Drive and Boulder Drive on the north, Rocky Point Drive and Eagleridge Drive on the east, and Lone Tree Way on the southwest. Maps are available on the District’s Web site.

There is no action required by residents as all products used are approved by the Environmental Protection Agency for the purpose of controlling mosquitoes and protecting public health. People wishing to be notified about adult mosquito fogging or spraying have several options. They may visit the District’s Web site at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically by email, they can view information on the District Web site, or they may phone the District for a recorded message at (925) 771-6195.

In Contra Costa County to date this year, there have been six dead birds (one from Alamo, one from Knightsen, and four from Antioch) and five groups of mosquitoes (one from Holland Tract and four from Antioch) that have tested positive for West Nile virus. So far this year, no human cases have been reported.

CONCORD, CALIFORNIA - - A group of mosquitoes collected on July 2 in Antioch near the Contra Loma Reservoir has tested positive for West Nile virus, the second infected group of mosquitoes documented in Contra Costa County this year. Last month there was one group of virus-positive mosquitoes trapped in Holland Tract, as well as infected dead birds found in Alamo and Antioch.

"Over the past several weeks, our surveillance system has indicated that a portion of Antioch is at a higher risk of West Nile virus transmission," said Deborah Bass, public affairs manager with the Contra Costa Mosquito and Vector Control District. "Our technicians continue to put forth great effort in locating and treating mosquitoes that may transmit the virus to people and animals in this area."

The current heat wave is expected to increase the risk of West Nile virus transmission since higher temperatures help mosquitoes develop through their life cycle quicker and also increase the rate of replication of the virus in their salivary glands.

"We are urging property owners to routinely check their yards and dump mosquito water sources and to properly maintain their water features," said Bass. "Especially swimming pools, which can produce hundreds of thousands of mosquitoes and affect residents up to a five-mile radius."

Since the arrival of West Nile virus in Contra Costa County in 2004, 22 people have been documented with the disease and two have died. This year in California three people have been documented with the virus so far, as well as 268 dead birds, 86 samples of mosquitoes, four sentinel chickens and one horse.

To learn if the District is spraying for adult mosquitoes in Contra Costa County, please visit the district’s website at www.ccmvcd.dst.ca.us or call the District at (925) 771-6195 for a recorded message. Adult mosquito spray notifications by email are also available by signing up on the website.

CONCORD, CALIFORNIA - - A dead Western scrub jay found in Antioch has tested positive for West Nile virus, the second infected bird documented in Contra Costa County this year. Last month there was one infected dead bird found in Alamo and one group of virus-positive mosquitoes trapped in Holland Tract.

"Dead bird reports remain an important tool in our surveillance and control efforts," said Deborah Bass, spokeswoman for the District. "Even if we are unable to retrieve the birds for testing, the reports alone help us to understand where the risk of West Nile virus transmission is elevated so that we may aggressively seek and treat mosquitoes before they infect people."

Since the arrival of West Nile virus in Contra Costa County in 2004, 22 people have been documented with the disease and two have died. This year in California one person has been documented with the virus so far, as well as 184 dead birds, 57 samples of mosquitoes, two sentinel chickens and one horse. Last year at this time, there were two people confirmed with the virus, along with 100 dead birds, 73 samples of mosquitoes, and four sentinel chickens.

--How vital marshes went from being on the Bay Area's top 10 toxic hot spots to becoming an ecological haven for wildlife--

CONCORD, CALIFORNIA -- The Contra Costa Mosquito and Vector Control District today introduces a new video, "Peyton Slough Wetlands: The Crown Jewel of Contra Costa County" that depicts the restoration of the wetlands over the past 20 years. The restoration was spearheaded by the Peyton Slough Wetlands Advisory Committee. The video was produced in collaboration with the PSWAC by the Contra Costa Mosquito & Vector Control District.

"The video is a tribute to this very important marsh, how it started out as a toxic area and is now home to dozens of species of wildlife right here in our community," said Karl Malamud-Roam, Ph.D, environmental projects manager for the Contra Costa Mosquito & Vector Control District. "The historical perspective coupled with the lush palette of wildlife footage is stunning. It visually illustrates the impact that representatives of key local organizations have made over the past 20 years.

The video is scheduled to debut on Contra Costa Television, channel 27 for comcast subscribers and channel 32 for Astound subscribers in Concord and Walnut Creek, on June 9 at 6 p.m.; June 12 at 5 p.m., and June 24 at 7 p.m., and many more times throughout the year.

The Contra Costa Mosquito & Vector Control District is a public health agency and has been protecting public health for over 80 years. www.ccmvcd.dst.ca.us (925) 685-9301

The PSWAC is comprised of personnel from many different groups, including California Department of Fish & Game Office of Spill Prevention and Response, Mt. View Sanitary District, Contra Costa Mosquito & Vector Control District, East Bay Regional Park District, Rhodia, Mt. Diablo Audubon Society, California Department of Fish and Game, and more. For more information regarding this committee, please contact Karl Malamud-Roam, Environmental Projects Manager, Contra Costa Mosquito & Vector Control District. (925) 771-6107

CONCORD, CALIFORNIA -- A dead Hermit Thrush found in Alamo has tested positive for West Nile virus, the first positive West Nile virus case documented in Contra Costa County this year.

"West Nile virus is firmly established in California," said Deborah Bass, spokeswoman for the District. "But this first bird is a strong reminder that mosquitoes can transmit the disease to animals and people, and that it should be taken seriously."

Since the arrival of West Nile virus in Contra Costa County in 2004, 22 people have been documented with the disease and two have died. This year, one hundred dead birds from 18 California counties have been documented so far as well as 12 samples of mosquitoes and two chickens. Hot weather typically precedes positive virus cases since mosquitoes reproduce in as little as five days, as well as amplify the virus quicker in hotter weather, thus increasing the risk of West Nile virus infection.

To learn if the District is spraying for adult mosquitoes in Contra Costa County, please visit the district’s website at www.ccmvcd.dst.ca.us or call the District at (925) 685-9301 for a recorded message. Adult mosquito spray notifications by email are also available by signing up on the website.

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 685-9301, or visit their office between 8:00 a.m. and 4:30 p.m. to get FREE mosquito fish for ornamental ponds or horse troughs.

–Current conditions indicate higher risk for West Nile virus transmission–

WHAT/WHY: Due to high numbers of adult mosquitoes detected and the associated elevated risk of West Nile Virus, the Contra Costa Mosquito & Vector Control District will be fogging by trucks to control adult mosquitoes.

WHEN: Thursday, September 27, 2007. Fogging will take place between 7:00 p.m. and 10:00 p.m., weather permitting.

WHERE: Oakley: The area bordered by Empire Avenue on the west, W. Cypress Road on the north, O’Hara Avenue on the east, and Carpenter Road on the south.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as information on all West Nile virus activity/cases in Contra Costa County for 2007.

NOTIFICATION: The District recently introduced an automatic email notification for people wishing to learn about adult mosquito fogging or spraying in the county. Anyone can visit the District’s website at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically. Earlier this year, the Contra Costa County sheriff’s department announced that they discontinued their telephone notification calls for District adult mosquito spray operations since their reevaluation indicated that it did not meet their emergency criteria.

The District offers several ways in which people can learn about adult mosquito spray operations. Residents can visit the District website and view the information, opt in for the email notifications, or simply phone the District for a recorded message at (925) 685-9301.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 24 birds, four chickens, and 28 mosquito samples that have tested positive for West Nile virus. The Contra Costa Health Department is reporting three human cases, two of whom contracted West Nile virus within the county. Please visit http://www.cchealth.org/topics/west_nile/cases.php for more information.

WHEN: Wednesday, September 12, 2007. Fogging will take place between 7:30 p.m. and 10:00 p.m., weather permitting.

Northern boundary: The marsh edge approximately 100 yards south of the Carquinez Strait waterfront.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

Maintaining swimming pools and spas, and dumping standing water that can serve as a mosquito habitat are essential in reducing the risk of contracting West Nile virus. Wear mosquito repellent when outdoors, especially at dawn and dusk when mosquitoes are present.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 19 birds, three chickens, and 27 mosquito samples that have tested positive for West Nile virus.

–Current conditions indicate higher risk for West Nile virus transmission–

WHEN: Tuesday, September 11, 2007. Fogging will take place between 7:30 p.m. and 10:30 p.m., weather permitting.

WHERE: Antioch: The area bordered by Sunset Drive on the south, A street on the west, Wilbur Avenue on the north, and Hillcrest Avenue, Yosemite Drive, Calaveras Circle, Trembath Street, and Hargrove Street to Jacobsen Street on the east.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 19 birds, three chickens, and 28 mosquito samples that have tested positive for West Nile virus.

WHEN: Thursday, September 6, 2007. Fogging will take place between 7:30 p.m. and 10:00 p.m., weather permitting

Northern boundary: The marsh edge approximately 100 yards south of the Carquinez Strait waterfront.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 16 birds, three chickens, and 27 mosquito samples that have tested positive for West Nile virus.

WHEN: Thursday, September 6, 2007. Fogging will take place between 7:30 p.m. and 11:30 p.m., weather permitting.\WHERE: Oakley

Northern boundary: Oakley waterfront - Weibel Circle, Stonegate Circle, Rutherford Lane, Merlot Lane and Fetzer Lane

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 16 birds, three chickens, and 27 mosquito samples that have tested positive for West Nile virus.

WHEN: Wednesday, September 5, 2007. Fogging will take place between 7:30 p.m. and 10:30 p.m., weather permitting.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 16 birds, three chickens, and 27 mosquito samples that have tested positive for West Nile virus.

WHEN: Thursday, August 30, 2007. Fogging will take place between 7:30 p.m. and 10:00 p.m., weather permitting

WHERE: Oakley: The area bordered by Empire Avenue on the west, W. Cypress Road on the north, O’Hara Avenue on the east, and Carpenter Road on the south.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 ounces per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 16 birds, three chickens, and 25 mosquito samples that have tested positive for West Nile virus.

WHEN: Tuesday, August 28, 2007. Fogging will take place between 8:00 p.m. and 10:00 p.m., weather permitting

WHERE: Antioch: The area bordered by A Street on the west, Burlington Northern Santa Fe Railroad on the north, Hillcrest Avenue on the east, and Union Pacific Railroad on the south.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 16 birds, three chickens, and 25 mosquito samples that have tested positive for West Nile virus.

WHEN: Tuesday, August 21, 2007. Fogging will take place between dusk (approx. 8:00 p.m. to 9:00 p.m.) and midnight, weather permitting.

WHERE: Antioch: The area bordered by A Street on the west, Burlington Northern Santa Fe Railroad on the north, Hillcrest Avenue on the est, and Union Pacific Railroad on the south.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 15 birds, one chicken, and 20 mosquito samples that have tested positive for West Nile virus.

–Current conditions indicate higher risk for West Nile virus transmission–

WHEN: Wednesday, August 15, 2007. Fogging will take place between dusk (approx. 8:00 p.m. to 9:00 p.m.) and midnight, weather permitting

WHERE: Antioch: The area bordered by A Street on the west, Burlington Northern Santa Fe Railroad on the north, Hillcrest Avenue on the east, and Union Pacific Railroad on the south.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 13 birds, one chicken, and eight mosquito samples that have tested positive for West Nile virus.

PHOTO/INTERVIEW OPPORTUNITY: Boat Launch, Fulton Shipyard Road, Antioch at 7:30pm.

WHEN: Tuesday, August 14, 2007. Fogging will take place between dusk (approx. 8:00 p.m. to 9:00 p.m.) and midnight, weather permitting.

WHERE: Oakley: The area bordered by Empire Avenue on the west, W. Cypress Road on the north, O’Hara Avenue on the east, and Carpenter Road on the south.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2007.

2006: Last year in Contra Costa County, eight people were documented with West Nile virus and two people died.

2007 - TO DATE IN CONTRA COSTA COUNTY: To date in 2007, there have been 13 birds, one chicken, and eight mosquito samples that have tested positive for West Nile virus.

PHOTO/INTERVIEW OPPORTUNITY: Freedom High School, 1050 Neroly Road, Oakley, CA 94562 at 7:00 p.m.

August 7, 2007

CONCORD, CALIFORNIA - - Four samples of mosquitoes have tested positive for West Nile virus in Contra Costa County. One sample of mosquitoes was from Antioch and three samples were from Oakley.

"The significance of finding positive West Nile virus mosquitoes is that people can contract the disease when they are bitten by an infected mosquito," said Deborah Bass, spokesperson for the District. "While we will increase our control efforts in these areas, we continue to ask the public to ensure that they are not producing mosquitoes in their yards, which are often the biggest source of mosquitoes. And of course, to wear mosquito repellent when outdoors."

The vast majority of the District’s resources are focused on eliminating mosquitoes in their larval form; however, as a result of the heightened risk to people due to finding infected adult mosquitoes, District officials are preparing for possible adult mosquito fogging or spraying in focused neighborhoods during the latter part of this week, weather permitting.

The District recently introduced an automatic email notification for people wishing to learn about adult mosquito fogging or spraying in the county. Anyone can visit the District’s website at www.ccmvcd.dst.ca.us and opt to receive the notifications automatically. Earlier this year, the Contra Costa County sheriff’s department announced that they discontinued their telephone notification calls for District adult mosquito spray operations since their reevaluation indicated that it did not meet their emergency criteria.

Last year in Contra Costa County, eight people were documented with West Nile virus and two people died. To date in 2007, there have been twelve birds that have tested positive for West Nile virus.

In California this year, five people have died of the virus and a total of 64 people infected.

DRAIN all sources of standing water that may support mosquito-breeding habitats. Residential sources can be big producers of mosquitoes in Contra Costa County.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

To report dead birds or squirrels or learn about West Nile virus cases and activity in California, visit the California Department of Public Health’s website at www.westnile.ca.govhttp://www.westnile.ca.gov/

July 18, 2007

-Nearly half of the nearly 10,000 homes in foreclosure in Contra Costa County are located in areas of the highest risk for West Nile virus--

CONCORD, CALIFORNIA - - Home foreclosures are proving to be a health risk in Contra Costa County. The Contra Costa Mosquito & Vector Control District is asking homeowners, neighbors, Realtors, landscapers and other home service personnel to be vigilant in their fight against mosquito breeding and West Nile virus.

Homes in foreclosure have an increased risk of breeding mosquitoes that can carry the virus because homeowners are busy dealing with their financial situation and not necessarily maintaining their swimming pool or eliminating standing water that can breed mosquitoes on their property. Often, homes are ultimately abandoned and the swimming pool or spa is left to the mosquitoes where hundreds of thousands of them can be produced.

"Nearly 10,000 homes in Contra Costa County are in some sort of the foreclosure process and have the potential to produce mosquitoes simply through neglect or abandonment," said Deborah Bass, spokeswoman for the District. "To make matters worse, many of those homes are located in areas that are at higher risk for people contracting West Nile virus."

Overall, district technicians have inspected twice as many pools this year than last year. One out of three swimming pools was breeding mosquitoes.

"Clearly the West Nile virus risk would be decreased drastically if every resident and business owner became a steward of their neighborhood and their community," Bass said. "With more than 420,000 households and businesses in the county, the District simply doesn’t have the workforce to go door to door and inspect every property."

Homeowners are urged to drain their pools properly and not into the street. For proper pool-draining instructions, visit http://www.cccleanwater.org/_pdfs/Pool_Spa_Brochure.pdf. Bleach or other additives should not be used. Mosquitofish are available at the District free of charge.

Recent events, such as the 41 positive mosquito samples found in San Joaquin County that borders Contra Costa County, the clusters of dead bird reports in the county, and the increase of mosquitoes breeding in swimming pools and backyard sources have District officials worried that the risk of West Nile virus may be greater this year.

Last year in Contra Costa County, eight people were documented with West Nile virus and two people died. To date in 2007 there have been seven birds that have tested positive for West Nile virus.

In California this year, one person has died of the virus and nine more infected.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

June 27, 2007

WEST NILE VIRUS SEASON OFFICIAL WITH TWO POSITIVE DEAD BIRDS IN OAKLEY AND LAFAYETTE

Two dead birds, one found in Oakley and the other in Lafayette, have tested positive for West Nile virus, the first positive West Nile virus cases in Contra Costa County this year.

"It’s no surprise that West Nile virus activity is starting as the recent warmer weather kick starts the season," said Deborah Bass, spokeswoman for the District. "Every resident should be checking their yards for mosquito breeding that occurs in almost any quantity of water and dumping it out. They should do this not only for themselves and their family, but their neighbors as well. We all count on each other to do our part and reduce the risk of getting this disease."

Last year in Contra Costa County eight people were documented with West Nile virus and two people died. There were also 92 dead birds, 24 chickens, 20 mosquito samples (groups of mosquitoes), one horse, and 19 squirrels that tested positive for West Nile virus. So far in California this year, there has been one human case, 58 dead birds, two chickens, 33 mosquito samples, and two horses that have tested positive for the virus.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

April 20, 2007

LEGISLATURE DECLARES APRIL 23-29, 2007 WEST NILE VIRUS AND MOSQUITO AND VECTOR CONTROL AWARENESS WEEK

CONCORD, California -- The California State Legislature gave final approval yesterday to legislation (SCR 19 by Senator Gloria Negrete McLeod) declaring April 23-29, 2007 West Nile Virus and Mosquito and Vector Control Awareness Week in California. Many local governments throughout the state have passed similar resolutions in recent weeks.

The Awareness Week resolution acknowledges that 24 people have died and 1,200 have been made ill in California by West Nile virus in the past two years. It declares that adequately funded mosquito and vector control, disease surveillance, and public awareness programs are the best way to prevent outbreaks of West Nile virus and other vector-borne diseases. It also recognizes the important work of mosquito and vector control districts and their employees in protecting public health.

In Contra Costa County last year, eight people contracted West Nile virus and two people died. In recognition of West Nile Virus and Mosquito and Vector Control Awareness Week, the Contra Costa Mosquito & Vector Control District (CCMVCD) is hosting the following events:

* Ongoing tours of the District's state-of-the-art laboratory and mosquitofish hatchery

* Ongoing crafts for children: make crafts, see baby mosquitoes, see a real dog's heart, and more!

* 3:00 p.m.- Vectors Among us! Mosquitoes, rats, mice, ticks, yellowjackets and skunks

Storm Water Management Workshop - April 24, 2007 from 9:00 a.m.- noon at the CCMVCD office in Concord. Reservations required.

West Nile Virus Education Seminar and Repellent Giveaway to Seniors, April 25, 200

The Contra Costa Mosquito & Vector Control District is a public health agency and has been protecting public health for 80 years. Please visit our website for directions to our facility or call (925) 685-9301. www.ccmvcd.dst.ca.us

April 19, 2007

-West Nile Virus Education Event for Seniors Advocates Using Mosquito Repellent-

CONCORD, CALIFORNIA - - Several key officials are slated to speak at an event on April 25, 2007 aimed at educating seniors about West Nile virus and how to protect themselves against the mosquito-borne disease. The event, hosted by the Contra Costa Mosquito and Vector Control District (District) is in recognition of California’s West Nile Virus and Mosquito & Vector Control Awareness Week April 23-29, 2007. More than 250 seniors in the Rossmoor community of Walnut Creek are expected to hear the officials talk about West Nile virus and will be given free samples of mosquito repellent.

Slated to speak are former Assembly Member Joseph Canciamilla; Public Health Director Dr. Wendel Brunner; Department of Agriculture Commissioner Edward Meyer; Contra Costa Mosquito & Vector Control District General Manager Craig Downs; and the National Executive Director of the DEET Education Program Susan Little.

"West Nile virus is not a passing phenomenon," said Deborah Bass, public affairs manager for the District. "This is a wonderful collaboration of individuals who are working to keep our residents, in this case, an at-risk community, healthy through West Nile virus education and dissemination of repellents recommended by the United States Centers for Disease Control and Prevention."

What: West Nile Virus Education and Repellent Giveaway for Rossmoor Residents

The Contra Costa Mosquito & Vector Control District is a public health agency and has been protecting public health for 80 years. Please visit our website for more information www.ccmvcd.dst.ca.us or call (925) 685-9301.

Contra Costa Mosquito and Vector Control District is hosting a "Storm Water Management and Vector Control" workshop on Tuesday, April 24, 2007 for all city and county staff in an effort to teach proper water management practices in the city and county that won’t create a public health threat or public nuisance. Storm water basins often breed mosquitoes which are capable of transmitting West Nile virus to people or animals. Storm water basins can also harbor rats.

"Proper design, construction, and management of storm drains is essential to the health and welfare of our residents," said Environmental Programs Manager Karl Malamud-Roam of the District. "Storm drains can, when poorly constructed or managed, create stagnant pools of water throughout neighborhoods that are perfect for breeding thousands of mosquitoes, including those that can transmit West Nile virus, a sometimes fatal disease."

The Contra Costa Mosquito & Vector Control District is a public health agency and has been protecting public health for 80 years. Please visit our website for directions www.ccmvcd.dst.ca.us to our facility or call (925) 685-9301 for more information.

Mosquito District Opens Doors To Public In Honor Of West Nile Virus & Mosquito & Vector Control Awareness Week

CONCORD, CALIFORNIA - - Contra Costa Mosquito and Vector Control District is hosting an open house from 12 p.m. to 4 p.m. on Sunday, April 22, 2007 as part of California's West Nile Virus and Mosquito & Vector Control Awareness Week. Visitors can learn about West Nile virus, tour the District's state-of-the-art laboratory, visit the mosquitofish hatchery and speak with scientists and staff.

"It's a tremendous opportunity to take a behind-the-scenes look at mosquito and vector control, which always surprises visitors," said Craig Downs, general manager for the District. "In addition to attending presentations and touring our state-of-the-art laboratory and fish hatchery, visitors will have the opportunity to talk with our staff of scientists in the areas of entomology, biology, and the environment."

* Ongoing tours of the District's state-of-the-art laboratory and mosquitofish hatchery.

* 3:00 - Vectors Among Us! Mosquitoes, rats, mice, ticks, yellowjackets and skunks

CONCORD, CALIFORNIA - - Contra Costa Mosquito and Vector Control District officials learned today that a horse from East Contra Costa County has tested positive for West Nile virus. Confirmatory testing was conducted by the California Animal Health and Food Safety Laboratory at University of California, Davis. The horse began showing symptoms in late September of this year and had to be euthanized.

"We strongly urge every horse owner to vaccinate their horses," said Deborah Bass, public affairs manager for the District. "Forty-four percent of the horses that are diagnosed with West Nile virus in California die or have to be euthanized."

Clinical signs of West Nile virus infection in horses include stumbling, staggering, wobbly gait, loss of coordination, weakness and paralysis. Humans and animals cannot get West Nile virus from an infected horse; it is only spread by the bite of an infected mosquito.

It is not known at this time whether the horse was vaccinated. Contra Costa Mosquito and Vector control officials are nonetheless reminding residents that West Nile virus is here to stay.

"Warm weather is still upon us," said Deborah Bass, public affairs manager for the Contra Costa Mosquito and Vector Control District. "And we all know that warmer weather can lead to more mosquitoes."

Bass also states that mosquito and vector control technicians are finding higher numbers of mosquitoes in East county where flooding has taken place for waterfowl hunting. Mosquito and vector control technicians are continuing to monitor and control these areas for mosquitoes.

To date in Contra Costa County there have been eight human cases (two deaths), 86 dead birds, 24 chickens, 20 mosquito samples*, one horse, and 19 squirrels that have tested positive for West Nile virus. Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus.

In California this year, there have been 257 human cases (5 deaths), 1298 dead birds, 609 chickens, 821 mosquito samples, 42 horses, and 32 squirrels that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov. THIS SITE ALSO LISTS WEST NILE VIRUS CASE COUNTS BY COUNTY.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

* Mosquito samples: Mosquitoes are trapped, collected from the field, and then the females are pooled together by species. Each pool contains one to 50 mosquitoes. Each sample is tested for the presence of St. Louis encephalitis, Western Equine encephalomyelitis and West Nile viruses.

FOGGING FOR MOSQUITOES TO BE CONDUCTED WEDNESDAY IN BETHEL ISLAND AND ALONG THE WATERFRONT IN CONTRA COSTA COUNTY.

WHAT/WHY: Due to the high number of adult mosquitoes detected and the associated elevated risk of West Nile Virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control mosquitoes.

Fogging will take place in the following locations between 6:00AM and 7:15AM, weather permitting:

1) Bethel Island: the area bordered by Stone Road on the south, South Willow Road on the east, Piper Road and Bethel Island Road on the west and Gateway Road on the north.

Fogging will take place in the following locations between dusk (approximately 6:30PM) and midnight, weather permitting:

1) The area bordered by Waterfront Road on the south, Hastings Slough on the east, Suisun Bay shore on the north and I-680/Benicia Bridge on the west.

2) The area bordered by Mayport Court, Parkview Drive and Eden Court on the east, Polaris Drive on the south, Loftus Drive and Seasons Drive on the west and Willow Pass Road and the railroad tracks on the north.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

FOGGING FOR MOSQUITOES TO BE CONDUCTED TUESDAY IN CENTRAL CONTRA COSTA COUNTY

WHAT/WHY: Due to high numbers of adult mosquitoes being detected and associated elevated risk of West Nile Virus in the county and surrounding areas, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control adult mosquitoes.

WHEN: Tuesday, October 10, 2006. Fogging will take place between dusk (approx. 6:30 PM) and midnight, weather permitting.

1) Concord: the area bordered by Monument Blvd. to the north, Detroit Avenue to the east, Chalomar Road and Keswick Lane to the south and Gardenia Lane, the west end of Rosemary Lane and Orange Street and Oasis Drive to the west

2) Concord: the area bordered by Kimball Way and Joan Avenue on the north, Cape Cod Way on the east, Hitchcock Road and Liscome Way on the south and Francis Drive, Lancashire Drive and Kimball Court on the west.

3) Pacheco/Martinez: the area bordered by Hwy 680 on the west, Emshee Lane on the north, Pacheco Slough on the east and Imhoff Drive and the Contra Costa Sanitation District on the south.

4) Martinez: the area bordered by Goree Court and Arthur Road on the north, Irene Drive and Palms Drive on the east, Arthur Road and Leabig Lane on the south and Pacheco Blvd. on the west.

5) Pleasant Hill: the area bordered by Harriet Drive and Ellinwood Drive on the north, Hwy 680 on the east, Gregory Lane on the south and Patricia Drive, Leslie Drive and Ruth Drive on the west.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 0.75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

WHAT/WHY: The Contra Costa Mosquito & Vector Control District will be fogging by truck to control high numbers of adult mosquitoes on Bethel Island.

WHEN: Friday, October 6, 2006. Fogging will take place at approximately 6:00 a.m., weather permitting.

WHERE: Stone Road and North Stone Road on the south, Gateway Road and Piper Road on the north, South Willow Road on the east, and Bethel Island Road north of Gateway Road on the west.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/WEST NILE VIRUS CASES/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

WHEN: Friday, September 29. Fogging will take place at approximately 6:00 a.m., weather permitting

WHERE: Bethel Island Road on the West, Stone Road on the south, Gateway Road on the north, and North Stone Road on the east.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

WHEN: Thursday, September 28. Fogging will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

WHERE: The area bordered by Red Leaf Way on the west, N. Parkside Drive on the south, Montezuma Street/Herb White Way on the east and Willow Pass Road to the north.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

FOGGING FOR MOSQUITOES TO BE CONDUCTED WEDNESDAY NIGHT ALONG THE CONTRA COSTA COUNTY WATERFRONT

WHEN: Wednesday, September 27. Fogging will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

WHERE: The area bordered by Hwy 1 - 680 on the west, Waterfront Rd on the south, Pacheco Slough on the east and the shoreline of Suisun Bay to the North.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

WHEN: Wednesday, September 27. Fogging will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

WHERE: Martinez bordered by Pacheco Blvd/Sunrise Drive/Goree Ct on the west, Highway 4 on the south, Waterbird Way on the east and Arthur Road on the north.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

September 21, 2006

FOGGING FOR MOSQUITOES TO BE CONDUCTED TONIGHT ALONG CONTRA COSTA COUNTY WATERFRONT

WHEN: Thursday, September 21. Fogging will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

WHERE: Waterfront area bordered by the Benicia Bridge on the west, Waterfront road on the south, Pacheco Slough on the east and the shoreline on the north.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

September 18, 2006

FOGGING FOR MOSQUITOES TO BE CONDUCTED WEDNESDAY IN MARTINEZ AND WATERFRONT

WHAT/WHY: Due to the high number of mosquitoes and detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control mosquitoes.

WHEN: Wednesday, September 20^th. Spraying will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

WHERE: 1) Martinez/Waterfront area bordered by Pacheco Blvd/Sunrise Drive/Goree Ct/ I-680 on the west, Highway 4 on the south, Pacheco/Hastings Slough on the east, and Suisun Bay on the north.

TREATMENT: will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

September 13, 2006

FOGGING FOR MOSQUITOES IN CONTRA COSTA COUNTY TONIGHT

WHAT/WHY: Due to the high number of mosquitoes and detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be fogging by truck to control mosquitoes.

WHEN: Wednesday, September 13^th. Spraying will take place between dusk (approx. 8:00 PM) and midnight, weather permitting.

1) Waterfront area bordered by the Benicia Bridge on the west, just south of the railroad tracks on the south, Hastings Slough on the east and the shoreline on the north.

2) Martinez area bordered by I-680 on the west, Highway 4 on the south, Pacheco Slough on the east, and Imhoff Drive on the north.

TREATMENT will be made with truck-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of .75 oz/ acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

September 6, 2006

MOSQUITO DISTRICT TARGETS MOSQUITOES IN CONTRA COSTA COUNTY WATERFRONT AREA - SPRAYING BY HELICOPTER TOMORROW NIGHT

WHAT/WHY: Due to the detection of West Nile Virus in the county and surrounding areas, the Contra Costa Mosquito & Vector Control District will be spraying to control adult mosquitoes due to high numbers of adult mosquitoes being detected and associated elevated risk to people.

WHEN: Thursday, September 7^th. Spraying will take place between dusk (approx. 7:30 PM) and midnight, weather permitting

WHERE: Waterfront area bordered by the Benicia Bridge on the west, just south of the railroad tracks on the south, Hastings Slough on the east and the shoreline on the north.

TREATMENT will be made with helicopter-mounted ultra-low-volume equipment using Pyrenone 25-5 Public Health Insecticide (pyrethrin) applied at a rate of 1 ounce per acre.

ACTION REQUIRED BY RESIDENTS: None. All products used are approved by the Environmental Protection Agency for the use of controlling mosquitoes and protecting public health.

MAPS/INFO: Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged/sprayed, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

September 5, 2006

MOSQUITO DISTRICT URGES HELP FROM PUBLIC TO LOCATE BACKYARD SOURCES - MORE FOGGING PLANNED TO REDUCE MOSQUITOES

CONCORD, CALIFORNIA - - Continued West Nile virus activity and high mosquito populations mean Contra Costa Mosquito & Vector Control District will fog again in Pleasant Hill and Martinez. Field employees continued to work extra hours, working throughout the holiday weekend in an effort to locate and control mosquitoes in the area and will conduct truck-mounted fogging for adult mosquitoes tomorrow night. The areas to be fogged are:

1.) Martinez area bordered by I-680 on the west, Highway 4 on the south, Grayson Creek and Pacheco Slough on the east, and Arthur Road on the north.

2.) Pleasant Hill bordered by Patricia Drive, Leslie Drive, and Ruth Drive on the west, Gregory Lane on the south, I-680 on the east, and Harriet Drive and Ellinwood Drive on the North.

3.) Pleasant Hill/Concord bordered by I-680 on the west, Mayhew Way on the south and Walnut Creek on the east & north (the creek not the city).

Treatment will be made by truck-mounted equipment using Pyrenone 25-5 applied at a rate of 0.75 ounces per acre. Spraying will take place between dusk (approximately 8:00 p.m) and midnight, weather permitting.

"In spite of our field employees’ continued extra effort over the holiday weekend, we have been unable to determine the source of mosquitoes in these areas," said Deborah Bass, public affairs manager for the Contra Costa Mosquito and Vector Control District. "We urgently need help from the public to identify backyard sources. We have all known sources such as creeks, public ponds, and catch basins under surveillance and control, but we can’t visit every single backyard."

Visit the District’s website at www.ccmvcd.dst.ca.us to see maps of areas to be fogged, as well as all West Nile virus activity/cases in Contra Costa County for 2006.

August 30, 2006

WEST NILE VIRUS POSITIVE MOSQUITOES TRIGGER FOGGING IN PLEASANT HILL

-Contra Costa Mosquito & Vector Control District Continues Extended Mosquito Control Efforts-

CONCORD, CALIFORNIA - - Contra Costa Mosquito & Vector Control District officials announced today that three more mosquito samples have tested positive for West Nile virus. The mosquitoes were all trapped in Pleasant Hill. District technicians continue to work extended hours to provide additional control and will conduct truck-mounted fogging for adult mosquitoes tonight in three Contra Costa County locations:

1.) Martinez area bordered by I-680 on the west, Highway 4 on the south, Grayson Creek and Pacheco Slough on the east, and Arthur Road on the north.

2.) Pleasant Hill bordered by Patricia Drive, Leslie Drive, and Ruth Drive on the west, Gregory Lane on the south, I-680 on the east, and Harriet Drive and Ellinwood Drive on the North.

3.) Pleasant Hill/Concord bordered by I-680 on the west, Mayhew Way on the south and Walnut Creek on the east & north (the creek not the city).

Treatment will be made by truck-mounted equipment using Pyrenone 25-5 applied at a rate of 0.75 ounces per acre. Spraying will take place at approximately 7:45 p.m., weather permitting.

"Our technicians are dedicated to not only controlling mosquitoes, but to educating people on an individual basis. Working extended hours and on Saturdays helps us to accomplish that," said Deborah Bass, public affairs manager for the Contra Costa Mosquito and Vector Control District. "We have learned that in many cases, homeowners didn’t realize they were breeding mosquitoes right in their own backyard."

To date in Contra Costa County there have been three human cases (one death), 51 dead birds, 24 chickens, and 15 mosquito samples* that have tested positive for West Nile virus. Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus.

In California this year, there have been 96 human cases (2 deaths), 688 dead birds, 323 chickens, 575 mosquito samples, and 25 horses that have tested positive for the virus.

To learn if the District is fogging or spraying for adult mosquitoes in your neighborhood or for media opportunities, please visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 24, 2006 MEDIA OPPORTUNITY BELOW

CHICKENS TEST POSITIVE FOR WEST NILE VIRUS IN MARTINEZ, OAKLEY, AND HOLLAND TRACT

-Contra Costa Mosquito & Vector Control District Continues Extended Control Efforts - Will Conduct Aerial Spraying In Waterfront Areas Tonight-

CONCORD, CALIFORNIA - - Twenty four sentinel chickens in three flocks located in Martinez, Holland Tract, and Oakley have tested positive for West Nile virus, the first indication of sentinel chicken infections in Contra Costa County this year. Sentinel chickens are just one tool of many the Contra Costa Mosquito & Vector Control District uses to assess virus activity in the county in their efforts to control mosquitoes which carry mosquito-borne viruses, such as West Nile virus.

District technicians continue to work extended hours to provide additional surveillance and control. In addition, the District will conduct aerial spraying for adult mosquitoes tonight from Martinez to Pittsburg along the waterfront. Treatment will be made by helicopter using Pyrenone 25-5, a botanical pesticide, applied at a rate of 0.75 ounces per acre. Spraying will take place at approximately 7:30 p.m., weather permitting.

"Our surveillance indicates large numbers of mosquitoes in this area," said Deborah Bass, public affairs manager for the Contra Costa Mosquito and Vector Control District. "Spraying by helicopter is an efficient and effective way to kill adult mosquitoes."

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus.

In California this year, there have been 84 human cases, 586 dead birds, 233 chickens, 495 mosquito samples, and 16 horses that have tested positive for the virus.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

Maps will be available with spray locations (also available on our website). Not all areas along the waterfront are open to the public.

August 14, 2006

CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT URGES RESIDENTS TO PROTECT THEMSELVES FROM MOSQUITO BITES

-Residents are urged to use insect repellent and dump standing water in their yards to fight the bite-

CONCORD, CALIFORNIA - - Thirteen mosquito samples and 31 birds have tested positive for West Nile virus in Contra Costa County this year prompting Mosquito and Vector Control officials to urge residents to protect themselves from the disease.

"Mosquitoes that have West Nile virus are capable of giving people the virus," said Deborah Bass, public affairs manager for the Contra Costa Mosquito and Vector Control District. "We are urging residents to wear mosquito repellent, especially those products that contain the active ingredient DEET, and especially at dawn and dusk when mosquitoes are most active."

Contra Costa Mosquito & Vector Control District technicians are working extended schedules to provide additional surveillance and control and are currently conducting localized fogging for adult mosquitoes, weather permitting.

"Residents play a very important part in helping to reduce their risk of contracting West Nile virus," said Bass. "Getting rid of standing water, wearing repellent and calling the hotline to report dead birds are just a few of the many activities residents can do to help themselves and their community to fight the bite."

To learn if the District is fogging for adult mosquitoes or for media opportunities, please visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there have been 38 human cases, 443 dead birds, 143 chickens, 349 mosquito samples, and 13 horses that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 27, 2006

TWO MORE MOSQUITO SAMPLES AND THREE MORE DEAD BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - Two mosquito samples tested positive for West Nile virus at the Contra Costa Mosquito & Vector Control District laboratory yesterday. The samples will be sent to the University of California at Davis for confirmation of those test results. The mosquitoes were trapped in Oakley and Martinez. In addition, three birds from Martinez, Antioch, and Oakley have tested positive for the virus. To date, including these new cases, there are five mosquito samples and nine dead birds that have tested positive for West Nile virus in the county.

"This surveillance data indicates an elevated risk in the eastern and central areas of the county," said Carlos Sanabria, operations manager for the Contra Costa Mosquito and Vector Control District. "We are urging residents to wear mosquito repellent, especially those products that contain the active ingredient DEET, especially at dawn and dusk when mosquitoes are most active."

Contra Costa Mosquito & Vector Control District technicians are working extended schedules to provide additional surveillance and control and will conduct localized fogging for adult mosquitoes, weather permitting.

To learn if the District is fogging for adult mosquitoes or for media opportunities, please visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there have been six human cases, 151 dead birds, 29 chickens, 184 mosquito samples, and three horses that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 25, 2006

WEST NILE VIRUS POSITIVE MOSQUITOES FOUND IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - Three West Nile virus positive samples of mosquitoes have been found in Contra Costa County. The positive mosquitoes, trapped in Concord, Pacheco, and Holland Tract are the first to test positive this year in Contra Costa County. To date, six dead birds have also tested positive for West Nile virus in the county.

"Due to the elevated risk of human infection of West Nile virus in these areas, we are focusing our efforts there to minimize risk to our residents," said Craig Downs, general manager for the Contra Costa Mosquito and Vector Control District. "Positive West Nile virus mosquitoes mean that disease transmission is occurring in a specific location, unlike a positive bird that could have flown into an area."

Contra Costa Mosquito & Vector Control District technicians have begun working extended schedules to provide additional surveillance and control and will be conducting localized fogging for adult mosquitoes, weather permitting.

To learn if the District is fogging for adult mosquitoes or for media opportunities, please visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there have been five human cases, 151 dead birds, seven chickens, 62 mosquito samples, and three horses that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 20, 2006

TWO MORE DEAD BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - Another dead western scrub jay found in Oakley has tested positive for West Nile virus. The bird was found in the vicinity of Laurel Road and Empire Avenue. This is the fourth dead bird to test positive for the virus in Oakley so far this year. The other bird, an American crow found in Concord near Highway 4 and Laura Alice, tested positive for West Nile virus as well, bringing the total to six positive birds in Contra Costa County to date. No other cases of West Nile virus have been detected in the county this year.

"Warmer weather means mosquitoes develop faster, which means we have the potential for more mosquitoes," said Carlos Sanabria, operations manager for the Contra Costa Mosquito and Vector Control District. "Every mosquito counts in the long run and I can’t stress it enough that the public needs to maintain their swimming pools and check their yards at least once every five days for standing water."

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there have been three human cases, 97 dead birds, seven chickens, 62 mosquito samples, and one horse that have tested positive for the virus.

To learn if the District is spraying for adult mosquitoes in your neighborhood in Contra Costa County, please visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 18, 2006

FOURTH DEAD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - A dead western scrub jay found in Oakley has tested positive for West Nile virus. The bird was found in the vicinity of Highway 4 and Laurel Road. This is the fourth dead bird to test positive for the virus in Contra Costa County so far this year, and the third bird to test positive for West Nile virus in Oakley. No other cases of West Nile virus have been detected in Contra Costa County this year.

"Right now, unmaintained swimming pools are a huge problem. They can breed thousands upon thousands of mosquitoes in a neighborhood," said Carlos Sanabria, operations manager for the Contra Costa Mosquito and Vector Control District. "As a public health agency, we can’t stress enough the importance of maintaining swimming pools."

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there has been one human case, 96 dead birds, seven chickens, 62 mosquito samples, and one horse that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 12, 2006

SECOND DEAD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - A dead scrub jay found in Lafayette has tested positive for West Nile virus, the second positive West Nile virus case in Contra Costa County in 2006.

" We rely on the public to report dead birds to the state West Nile virus hotline because those reports help us respond to potential virus hot spots in the county and reduce possible human infection," said Dr. Steve Schutz, scientific programs manager for the Contra Costa Mosquito and Vector Control District. "The public should report dead birds immediately since birds that are dead over 24 hours are not viable specimens; however, even if the bird is dead for more than a day or is not picked up for testing, the reports themselves provide crucial information for our control efforts in protecting public health."

Last year in Contra Costa County there were 11 human cases, 94 dead birds, 18 chickens, four mosquito samples*, ten horses, and 25 squirrels that tested positive for West Nile virus. So far in California this year, there has been one human case, 64 dead birds, seven chickens and 36 mosquito samples that have tested positive for the virus.

To report dead birds or to learn of your local mosquito control district, call the California Department of Health Services at 1-877-WNV-BIRD (1-877-968-2473) or visit www.westnile.ca.gov.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

March 2006

WEST NILE COULD GET WORSE

America's top expert on west Nile virus warned of growing complacency about the mosquito-borne disease after it completed its predicted sweep across the country last year with cases peaking in Northern California.

As the virus settles in among wild birds and mosquitoes in nearly all the nation's most populated regions, "the potential for future outbreaks has never been greater," said Dr. Lyle Petersen, director of vector-borne infectious diseases for the federal Centers for Disease Control and Prevention.

Nearly 3,000 cases of the virus were recorded throughout the country in 2005, with the highest concentration in California, where 928 residents contracted the illness and 18 died. With the numbers trending down from the worst outbreak in years in 2002 and 2003 - when 14,000 Americans were stricken and 548 died in two seasons - the virus is beginning to seem less fearsome.

I think people are becoming complacent," Petersen said during a meeting with reporters. "Not so much in California, but in the other parts of the country....That is a huge mistake. These diseases are episodic.

The virus is now considered endemic in the United States, like its cousin St. Louis encephalitis, which has periodically afflicted different parts of the country for 80 years. West Nile virus and St. Louis encephalitis reside primarily in birds and are spread by the same families of mosquitoes. Humans and horses are incidental victims of a biological war between the birds and the bugs.

What worries Petersen is that St. Louis encephalitis has proved to be unpredictable, and occasionally explosive, with a huge national outbreak occurring in 1975. Now that West Nile virus has settled in among us, he is concerned that it, too, will become unpredictable -- with more dire consequences. "It would be a massive epidemic on a scale not seen before,'' he said.

West Nile virus remains a much more lethal bug than its cousin. Birds infected with West Nile have hundreds of times more viruses in their bloodstream than those who contract St. Louis encephalitis. "West Nile virus,'' Petersen said, is SLE on amphetamines.''

California scientists are carefully studying the outbreaks of the past two years, trying to determine if they can blunt its effects by directing mosquito-control efforts to hot spots as they turn up.

Dead birds have proven to be a remarkably effective predictor of human outbreaks. Using a computer program originally developed in New York and Chicago, the California Department of Health Services is pooling information from citizens calling its dead birds hot line -- (877) 968-2473 -- and tracking West Nile with remarkable accuracy.

West Nile virus is here to stay in California,'' she said. But early-season mosquito control, in particular, she said can interfere with the life cycle of mosquitoes that feed on infected birds.

September 27, 2005

THREE MORE WEST NILE VIRUS CASES REPORTED IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District received confirmation that two woman and one man, all from east Contra Costa County, have been diagnosed with West Nile virus. One of the women, a 53 year-old, was diagnosed through the screening of her blood donation. Ages of the other two people were not reported.

The District is also reporting an additional four birds, six squirrels, one mosquito sample, and two horses that have tested positive for West Nile virus.

To date this year in Contra Costa County there have been a total of 11 human cases, 64 birds, 15 chickens, four mosquito samples (groups of mosquitoes), ten horses, and 16 squirrels that have tested positive for West Nile virus. In California, there have been 15 West Nile virus-related fatalities and 735 people diagnosed with the disease this year.

To learn about possible mosquito spraying in Contra Costa County, visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

September 19, 2005

ONE MORE WEST NILE VIRUS CASE REPORTED IN CONTRA COSTA COUNTY

September 12, 2005

FOUR MORE PEOPLE TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District received confirmation of four more human West Nile virus cases in the county this year. The four new human cases include three men aged 66, 69, and 72 years-old, and a woman aged 68 years-old. All are from east Contra Costa County.

The District is also reporting an additional 15 birds, four squirrels, two horses, and three chickens that have tested positive for West Nile virus.

"Our data illustrates we have surpassed our peak in virus activity," said Deborah Bass, public affairs manager for the District. "Although we are reporting additional human and horse cases, these infections occurred 3-5 weeks ago. Mosquito production is still in full swing and so we all need to remain diligent in our mosquito control efforts".

To date in Contra Costa County there have been a total of seven human cases, 53 birds, 9 chickens, three mosquito samples, seven horses, and 5 squirrels that have tested positive for West Nile virus. In California, there have been nine West Nile virus-related fatalities and 593 people diagnosed with the disease this year.

To learn about possible mosquito spraying in Contra Costa County, visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 31, 2005

THIRD PERSON TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District received confirmation of the third human West Nile virus case in the county this year. A woman between the ages of 18-50 is a resident of central Contra Costa County and is reported to have had the milder form of the disease, West Nile fever. West Nile fever is generally described as a mild to severe flu-like illness lasting several days to a few months.

"We need to partner with the public," said Deborah Bass, public affairs manager for the District. "Considering that one mosquito can produce up to two million offspring in as little as a month and that residential yards make up the majority of mosquito breeding in our county – it’s imperative that residents join us in the fight against this disease by checking their own yards for standing water and eliminating it so mosquitoes don’t breed".

To date in Contra Costa County there have been a total of three humans, 38 birds, six chickens, three mosquito samples, five horses, and one squirrel that have tested positive for West Nile virus. In California, there have been eight West Nile virus-related fatalities and 416 people diagnosed with the disease this year.

To learn about possible mosquito spraying in Contra Costa County, visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 29, 2005

SECOND PERSON TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - The Contra Costa Mosquito and Vector Control District received confirmation of the second human West Nile virus case in the county this year. The person is a resident of east Contra Costa County and is reported to have had the milder form of the disease, West Nile fever. In addition, eleven more birds and six sentinel chickens have tested positive for West Nile virus. The birds were found in Concord (3), Pleasant Hill, Danville, Clayton, Brentwood, Palm Tract (north of Discovery Bay), Orinda, and Walnut Creek (2). The chickens are located in Knightsen, Oakley, and Martinez.

"I can't emphasize enough the need for the public to apply mosquito repellent when outdoors, especially at dusk and dawn," said Deborah Bass, public affairs manager for the District. "Repellents containing DEET, picaridin, or oil of lemon eucalyptus are proven to be the most effective".

To date in Contra Costa County there have been a total of two humans, 38 birds, six chickens, three mosquito samples, five horses, and one squirrel that have tested positive for West Nile virus. In California, there have been eight West Nile virus-related fatalities and 370 people diagnosed with the disease this year.

To learn about possible mosquito spraying in Contra Costa County, visit the district’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 22, 2005

SIX MORE BIRDS AND THREE MORE HORSES TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District received confirmation today that six more birds and three more horses have tested positive for West Nile virus (WNV).

The six birds reported this week were found in Antioch (1), Alamo (1), Oakley (3), and Walnut Creek (1). All three horses reported this week are from eastern Contra Costa County.

To date in Contra Costa County, there has been one human case, 27 birds, three mosquito samples, and five horses that have tested positive for West Nile virus. In California, there have been 265 human cases.

To learn about WNV activity for each county in California, visit the California Department of Health Services website at www.westnile.ca.gov

To learn about possible mosquito spraying in Contra Costa County, visit the District’s website at www.ccmvcd.dst.ca.us or call (925) 685-9301 for a recorded message.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 16, 2005

MOSQUITO AND VECTOR CONTROL DISTRICT URGES RESIDENTS TO RID MOSQUITO SOURCES FROM THEIR PROPERTIES

CONCORD, CALIFORNIA - - The Contra Costa Mosquito & Vector Control District (District) is asking residents for help in combating West Nile virus (WNV) by checking for and eliminating all standing water from their property.

"It’s simple, but life-saving advice", said Deborah Bass, public affairs manager for the District. "Most mosquitoes come from private property. Given that mosquitoes can breed in as little as a capful of water, we need and urge residents to walk their property and find and dump any standing water to help us in the fight against West Nile virus."

Yesterday, the District received confirmation that a second horse located in East Contra Costa County has tested positive for the virus and is now recovering. Five more dead birds have tested positive for the virus as well. They include an American crow that was found in Pleasant Hill, a scrub jay that was found outside the Clayton area, two scrub jays that were found in Brentwood, and one scrub jay that was found in Antioch.

As of today, the District is not picking up and testing dead birds that are reported in Brentwood since it is well documented that West Nile virus is present in the area. The District is asking residents to continue to report the dead birds to 1-877-WNV-BIRD since the reports themselves yield valuable information for mosquito control efforts.

To date in Contra Costa County there have been a total of 21 birds, three mosquito samples, two horses, and one person that have tested positive for West Nile virus. In California, there have been five West Nile virus-related fatalities and 174 people that have been diagnosed with the disease this year. Approximately half of the 148 horses that have tested positive for the virus have either died or been euthanized.

August 11, 2005

FIRST HORSE AND THREE MORE BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District received confirmation today that three more birds and a horse have tested positive for West Nile virus (WNV). The horse, located in East County, was treated and later euthanized. Confirmatory testing was conducted by the California Animal Health and Food Safety Laboratory, at University of California, Davis and reported on August 9. Two birds from Lafayette and one bird from Oakley also tested positive for the virus. The first bird, a scrub jay, was found near Reliez Valley Road and Withers Avenue. The second bird, a house finch, was found near St. Mary's Road and Rohrer Drive. The third bird, an American kestrel, was found in Oakley near West Cypress Road and Ohara Avenue.

"We strongly urge every horse owner to vaccinate their horses," said Deborah Bass, public affairs manager for the District. "Nearly fifty percent of the horses that are diagnosed with West Nile virus in California die or are euthanized - it's tragic given that there is a vaccine available".

Clinical signs of WNV infection in horses include stumbling, staggering, wobbly gait, loss of coordination, weakness and paralysis. Humans and animals cannot get West Nile virus from an infected horse; it is only spread by the bite of an infected mosquito.

To date in Contra Costa County, there have been a total of 17 birds, three mosquito samples, and one horse that have tested positive for West Nile virus. There have been no human cases. In California, there have been three West Nile virus-related fatalities and 118 people diagnosed with the disease this year.

August 9, 2005

SPRAYING FOR ADULT MOSQUITOES TO TAKE PLACE IN BRENTWOOD AND DISCOVERY BAY TONIGHT

--Truck-mounted fogging will reduce adult mosquitoes that can transmit West Nile virus--

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District will use truck-mounted equipment tonight to spray adult mosquitoes that can transmit West Nile virus to people and animals. Weather permitting, spraying is scheduled to take place in Brentwood in the areas of Balfour Road and Walnut Avenue, as well as Lone Tree Way and Fairview Avenue, and approximately one half mile in the surrounding areas. Spraying will also take place in Discovery Bay, weather permitting, near Point of Timber Road and Bixler Road and approximately one half mile in the surrounding areas. All of these areas are scheduled for spraying between 9:00 p.m. and 10:30 p.m. tonight.

"Our decision to spray is based on comprehensive and scientific criteria as outlined in our plan for responding to mosquito-borne diseases such as West Nile virus," said Deborah Bass, spokeswoman for the District. "We have a plan to protect public health and we're proceeding with that plan."

According to Bass, there is no need to take special precautions due to the spraying. The pesticide's active ingredient, resmethrin, is not only approved, but recommended for mosquito control by the environmental protection agency. Although mosquito control pesticides pose low risks, some people may prefer to avoid or further minimize exposure. Some common sense steps to help reduce possible exposure to pesticides include:

· Visit the District's website at www.ccmvcd.dst.ca.us or call the District at (925) 685-9301, ext 170 for announcement about spraying and remain indoors during applications in the immediate area.
· People who suffer from chemical sensitivities or feel spraying may aggravate a preexisting health condition may consult their physician or local health department and take special measures to avoid exposure.
· Close windows and turn off window-unit air conditioners when spraying is taking place in the immediate area.
· Keep children's toys indoors.
Since the spray dissipates in a few hours, it is not necessary to wash off outdoor furniture or playground equipment before use.

Since Friday, the California Department of Health Services is reporting a jump in human cases of WNV from 56 to 102 for the state. In San Joaquin County, their human cases jumped from six to 21. Forty-six of the 58 counties in California now have WNV cases reported in their areas. To date in Contra Costa County, there have been a total of 14 birds and three mosquito samples that have tested positive for West Nile virus. There have been no human or horse cases in the county to date.

The last bird, a Western scrub jay, was picked up and tested on August 4. The bird was found near Ygnacio Valley Road and Walnut Avenue in Walnut Creek.

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 685-9301, or visit our office between 8:00 a.m. and 4:30 p.m. to get mosquitofish. Visit our website www.ccmvcd.dst.ca.us for more information or to learn about possible mosquito spraying in your area.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

August 4, 2005

MORE MOSQUITOES AND BIRDS INFECTED WITH WEST NILE VIRUS FOUND IN CONTRA COSTA COUNTY

--Residents participate in locating dead birds via state hotline--

CONCORD, CALIFORNIA - One mosquito sample and four birds have tested positive for West Nile virus in Contra Costa County this week. The mosquito sample comes from Bethel Island and is the second sample from Bethel Island and the third in the county to test positive for the virus to date. Three birds collected in late July and one collected today also tested positive for the virus this week. The first bird, a Sparrow, was found in Concord near Willow Pass Road and Farm Bureau Road. The second bird, a house finch, was found in Discovery Bay near Discovery Bay Blvd. and Sand Point Road. The third bird, a crow, was found in Brentwood near Balfour Road and Walnut Blvd. The fourth bird, a scrub jay, was also found in Brentwood near Central Blvd. and Fairview Avenue.

“All calls to the dead bird hotline are important, even if we are not able to pick up the dead birds, since the reports themselves are invaluable to our mosquito control efforts,” said Deborah Bass, public affairs manager for the District. “Residents simply call the hotline, answer simple questions about the birds condition to determine whether the bird is a candidate for testing, and then they are instructed to either discard the bird or wait for a technician to pick it up ”.

This year, over 2000 calls have been made to the state dead bird hotline from Contra Costa County residents, the sixth largest call volume for any county in the state.

To date in Contra Costa County, there have been a total of 13 birds and three mosquito samples that have tested positive for West Nile virus. There have been no human or horse cases in the county to date. In California this year, there have been two West Nile virus-related fatalities, one each in Kings and Riverside counties.

Contra Costa Mosquito and Vector Control District technicians are setting out extra traps today to understand the extent of the adult mosquito populations, as well as checking and treating known mosquito sources and scouring the area for new ones. Technicians will also be visiting homeowners in the area to discuss possible breeding sources and handing out literature.

West Nile virus is one of a group of disease-causing viruses spread by mosquitoes. It first appeared in the United States in 1999. The virus is transmitted to humans and animals through the bite of an infected mosquito. Mosquitoes become infected with WNV when they feed on infected birds.

August 1, 2005

MOSQUITOES FOUND WITH WEST NILE VIRUS ON BETHEL ISLAND - ANOTHER BIRD FOUND IN BRENTWOOD

--Mosquito Control District continues to enhance control and public outreach efforts--

CONCORD, CALIFORNIA - Mosquitoes collected Wednesday in the Northeast area of Bethel Island tested positive for West Nile virus late Friday at the Contra Costa Mosquito and Vector Control District (District) marking the second documented case of mosquitoes infected with WNV in Contra Costa County to date. A Scrub Jay collected in Brentwood also tested positive Friday for the virus. That bird, the ninth this year in the county, was found Thursday near Lone Tree Way and Fairview Avenue. There have been no human or horse cases in Contra Costa County to date.

“Our extra surveillance and control efforts are paying off,” said Carlos Sanabria, lead vector control inspector for the District. “Both of the infected mosquito samples we have are from extra traps we set around the county to help us determine were the virus might be so we can intensify our control efforts and protect public health”.

Contra Costa Mosquito and Vector Control District technicians are setting out extra traps today to understand the extent of the adult mosquito populations as well as checking and treating known mosquito sources and scouring the area for new ones. Technicians will also be visiting homeowners in the area to discuss possible breeding sources and handing out literature.

July 28, 2005

MORE DEAD BIRDS FOUND POSITIVE WITH WEST NILE VIRUS IN DANVILLE AREA

--Possibility of higher risk indicates need for mosquito repellent and residential source checking--

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation late yesterday that two dead birds found in Alamo and Danville have tested positive for West Nile virus (WNV). A total of eight dead birds have been confirmed with WNV in Contra Costa County this year, including these two birds. The first bird, a sparrow, was found near Stone Valley Road and Roundhill Road in Alamo. The second bird, a robin, was found near Stone Valley Road and Green Valley Road in Danville. There have been no human or horse cases to date in Contra Costa County.

"So far this year, we have identified three birds in the Danville area that have tested positive for West Nile virus," said Dr. Steve Schutz, scientific programs manager for the District. "This indicates that there may be a higher risk of contracting the disease in this area. Residents should be diligent about wearing mosquito repellent and also checking their yards to ensure they are not breeding mosquitoes".

July 25, 2005

BIRD INFECTED WITH WEST NILE VIRUS FOUND IN CONCORD

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) reports that a dead bird found in Concord has tested positive for West Nile virus (WNV), the sixth bird for all of Contra Costa County this year. The bird, a scrub jay, was found near Cowell Road and Treat Blvd. on Friday, July 22, 2005 and tested at the District the same day. There have been no human or horse cases to date in Contra Costa County. Last week, the District reported a sample of mosquitoes near Brentwood that tested positive for West Nile virus.

"We are getting great support from our residents in helping us to understand where the infected birds are dying," said Deborah Bass, spokeswoman for the District. "Dead bird reports enable us to concentrate our mosquito control efforts in areas where it is needed to stay proactive in our response to this disease". West Nile virus is one of a group of disease-causing viruses spread by mosquitoes. It first appeared in the United States in 1999. The virus is transmitted to humans and animals through the bite of an infected mosquito. Mosquitoes become infected with WNV when they feed on infected birds.

July 21, 2005

BIRD INFECTED WITH WEST NILE VIRUS FOUND IN PITTSBURG

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation last night that a bird found in Pittsburg has tested positive for West Nile virus (WNV), the fifth bird for all of Contra Costa County this year. The bird, an American kestrel, was found on June 29, 2005 and sent to the University of Davis for testing. There have been no human or horse cases to date in Contra Costa County. Monday, the District reported a sample of mosquitoes near Brentwood that tested positive for West Nile virus.

We fully expect to see more birds, said Carlos Sanabria, lead vector control inspector for the District. We are responding to these areas immediately and appropriately to curb mosquito breeding.

To reduce the risk of being bitten by mosquitoes or contracting WNV, residents are urged to take the following precautions:

Contra Costa Mosquito & Vector Control District is located at 155 Mason Circle in Concord. Call the District to report mosquito problems at (925) 685-9301, or visit our office between 8:00 a.m. and 4:30 p.m. to get mosquitofish. Visit our website www.ccmvcd.dst.ca.us for more information or to learn about possible mosquito spraying in your area.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911 or visit their website at www.ccpublichealth.org

July 18, 2005

MOSQUITOES INFECTED WITH WEST NILE VIRUS CONFIRMED IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - A mosquito sample tested positive late Friday at the Contra Costa Mosquito and Vector Control District (District) for West Nile virus (WNV). The pooled sample containing 40 mosquitoes was collected in an unincorporated area south of Brentwood near Marsh Creek Road and Walnut Blvd. This is the first documented case of mosquitoes infected with WNV in Contra Costa County. To date, four birds out of 251 tested have been positive for the virus in the County this year, but no human or horse cases have been documented.

According to Carlos Sanabria, lead vector control inspector for the District, "We have already doubled our work force county wide, and we are now sending additional personnel to the Brentwood area to set extra traps and locate and treat mosquito larval sources. If appropriate, we will also be spraying in the area to knock down the adult mosquitoes. The good news is that in spite of the hot weather, our adult mosquito counts have remained low and our technicians are working hard to keep it that way".

July 14, 2005

DANVILLE BIRD TESTS POSITIVE FOR WEST NILE VIRUS

CONCORD, CALIFORNIA - A dead scrub jay found in Danville tested positive for West Nile virus today at the Contra Costa Mosquito & Vector Control District (the District). The bird, found near the intersection of Green Valley Road and Diablo Road, is the fourth bird to test positive this year in Contra Costa County for West Nile virus. The first three birds that tested positive this year for West Nile virus were probably infected in 2004. This is the first bird that has tested positive that was likely infected this year. There have been no human cases, horses, or mosquitoes found with the virus in Contra Costa County to date.

“We have certainly tackled West Nile virus head on with our aggressive surveillance and control efforts – doubling our mosquito control staff, tripling our education personnel, increasing our traps and such,” said Craig Downs, general manager for the District. “However, the cooler weather we had this Spring helped delay the virus season. Now that it’s hot, it’s not surprising that we have another positive bird. Hot weather and mosquitoes go hand-in-hand.”

Experts are predicting Northern California to be the epicenter of West Nile virus this year. The virus is one of a group of disease-causing viruses spread by mosquitoes. It is transmitted to humans and animals through the bite of an infected mosquito and cannot be spread person to person. Mosquitoes become infected with WNV when they feed on infected birds.

“Residents should continue to be diligent in getting rid of standing water around their homes,” said Deborah Bass, spokeswoman for the District. “We simply can’t say enough how important not breeding mosquitoes in the first place is. It’s a simple, but life-saving task.”

THIRD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA -The Contra Costa Mosquito Vector Control District;(the District) received confirmation that another bird found in Contra Costa County has tested positive for West Nile virus (WNV). The bird, a yellow-rumped warbler, was found on February 22, 2005 in Brentwood. This brings to three the total number of WNV positive birds in the county in 2005.

FIRST BIRDS OF THE YEAR TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

It's not surprising that we are already getting West Nile virus positive birds," said Deborah Bass, public affairs manager for the District. "We have hired and trained additional staff for the year who are already hard at work suppressing mosquito populations in the county."

It is estimated that 1 in 5 people bitten by an infected mosquito become ill. People who do become ill may experience symptoms like fever, headache and body ache. Less than one percent of infected individuals require hospitalization. The elderly and immunocompromised are particularly susceptible to illness caused by WNV.

"The best prevention method for West Nile virus is to not breed mosquitoes in the first place," said Bass. "We are urging residents to dump and drain water that collects in anything that can hold more than a couple of tablespoons of water such as boat covers, rain gutters, pots, flower saucers, containers on the side yard, etc."

To reduce the risk of being bitten by mosquitoes or contracting WNV, residents are urged to take the following precautions:

· Drain all sources of standing water around your house to prevent mosquito breeding. Residential sources are the number one source of mosquitoes in Contra Costa County.

· Report dead birds to 877-WNV-BIRD (877-968-2473). Not all birds will be picked up and tested, but reporting dead birds is crucial information for mosquito control efforts.

· Stock mosquitofish (available FREE from the District) in backyard ponds and horse troughs.

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911.

November 4, 2004

PET BIRD TESTS POSITIVE FOR WEST NILE VIRUS

CONCORD, CALIFORNIA -The Contra Costa Mosquito & Vector Control District (the District) received confirmation late yesterday afternoon that a pet cockatiel submitted by a veterinarian in Contra Costa County has tested positive for West Nile virus (WNV). This brings the total to eighteen for the county this year. The bird was from Walnut Creek. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

November 3, 2004

MORE BIRDS TEST POSITIVE FOR WEST NILE VIRUS

CONCORD, CALIFORNIA -The Contra Costa Mosquito & Vector Control District (the District) received confirmation this afternoon that two more birds found in Contra Costa County have tested positive for West Nile virus (WNV). This brings the total to seventeen for the county this year. The first bird, a barn owl, was found on October 22, 2004 in Clayton, near Marsh Creek and Clayton Roads. The second bird, Brewer's blackbird, was found on October 27 in San Ramon near Crow Canyon Road and San Ramon Valley Boulevard. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

"While mosquito season is winding down, there are some species that remain active even during cooler weather" said Craig Downs, General Manager of the District. "Protecting yourself against mosquito bites and eliminating backyard mosquito breeding sources is still very important."

West Nile virus is one of a group of disease-causing viruses spread by mosquitoes. West Nile virus first appeared in the United States in 1999. The virus is transmitted to humans and animals through the bite of an infected mosquito and cannot be spread person to person.

Mosquitoes become infected with WNV when they feed on infected birds. Most people who are bitten by a mosquito with WNV will not get sick. People who do become ill may experience symptoms like fever, headache and body ache. It is estimated that 1 in 5 people bitten by an infected mosquito become ill. Less than one percent of infected individuals require hospitalization. The elderly and immunocompromised are particularly susceptible to illness caused by WNV.

To reduce the risk of being bitten by mosquitoes or contracting WNV, residents are urged to take the following precautions:

For information concerning West Nile virus symptoms, prevention, or testing, please call the Contra Costa Health Services department at (888) 959-9911.

October 28, 2004

MORE BIRDS TEST POSITIVE FOR WEST NILE VIRUS

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District received confirmation late yesterday that two more birds found in Contra Costa County have tested positive for West Nile virus (WNV). This brings the total to fifteen for the county this year. The first bird, a Coopers Hawk, was found on October 12, 2004 in El Cerrito near San Pablo Avenue and Cutting Blvd. The second bird, a Red-shouldered Hawk was found on October 14 in Martinez, near Alhambra Valley Road and Reliez Valley Road. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

"With 22 species of mosquitoes in Contra Costa County, many mosquitoes are still breeding- even in this cooler weather" said Deborah Bass, public affairs manager for the District. "Eliminating backyard mosquito breeding sources is still very important."

October 1, 2004

DISTRICT RECEIVES BEST IN SHOW 2004 COMPASS AWARD FOR WEST NILE VIRUS CAMPAIGN

CONCORD, CALIFORNIA - Deborah Bass, the District's public affairs manager had the honor of accepting a Compass Award at the 2004 Public Relations Society of America's Northern California Compass Award Celebration held on Lake Merritt in Oakland on September 23, 2004. The Compass Award, the highest award for this competition, was bestowed to the District for their entry of their 2003 West Nile Virus Public Relations Campaign in the category of Integrated Communications Program for Associations/Government/Nonprofit Organizations. Highlights of the West Nile virus program include their West Nile Virus: Are We Prepared? video and their newspaper insert. see http://www.prsaeastbay.org/news.html#Compass

September 29 , 2004

ANOTHER BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN WALNUT CREEK

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation today that another bird found in Contra Costa County has tested positive for West Nile virus (WNV). This brings the total to twelve for the county this year. The bird, a Western Scrub-Jay, was found on September 7, 2004 in Walnut Creek near Ygnacio Valley Road and La Casa Via. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“The stores may already have their winter season wardrobe in,” said Deborah Bass, public affairs manager for the District. “But for mosquitoes, it’s still the season to breed. Checking and draining backyard mosquito breeding sources is still important in the fight against West Nile virus.”

September 16 , 2004

MORE BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN ALAMO AND WALNUT CREEK

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation today that two more birds found in Contra Costa County have tested positive for West Nile virus (WNV). This brings the total to eleven for the county this year. The first bird, a Western Scrub-Jay, was found on September 2, 2004 in Walnut Creek near Walnut Avenue and Oak Grove Blvd. The second bird, also a Western Scrub-Jay, was found on September 3, 2004 in Alamo near Stone Valley Road and Roundhill Road. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“The mosquito season is still going strong,” said Craig Downs, general manager for the District. “Everyone needs to heed the guidelines we are giving them. Colorado health officials have warned us that the reason so many Colorado residents were infected last year with the virus was because they didn’t see the virus as a serious health threat and they didn’t follow the simple and important recommendations.”

Last year in Colorado there were nearly 3,000 human cases and 63 deaths due to the virus.

September 10 , 2004

BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN ALAMO AND WALNUT CREEK

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation today that two more birds found in Contra Costa County have tested positive for West Nile virus (WNV). This brings the total to nine for the county this year. The first bird, a Western Scrub-Jay, was found on August 23, 2004 in Walnut Creek near Tice Valley Blvd. and Danville Blvd. The second bird, also a Western Scrub-Jay, was found on August 24, 2004 near Danville Blvd. and Stone Valley Blvd. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“More than ever, residents need to remain diligent in their own mosquito control efforts by removing standing water from their yards,” said Craig Downs, general manager for the District. “Most mosquito breeding in Contra Costa County comes from residential sources.”

September 3 , 2004

BIRD IN ORINDA TESTS POSITIVE.

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District reports an additional confirmation of West Nile virus in bird. The bird, a scrub jay, was found on August 20, 2004 near the corner of Camino Pablo and El Toyonal in Orinda.

September 2 , 2004

BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN ANTIOCH AND DISCOVERY BAY.

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation today that two more birds found in Contra Costa County have tested positive for West Nile virus (WNV). This brings the total to six for the county this year. The first bird, an American Kestrel, was found on August 16, 2004 in Antioch near Contra Loma and James Donlon Blvds. The second bird, a Coopers Hawk, was found on August 18, 2004 at the Discovery Bay Golf Course. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“We’d like to thank our residents for participating in the dead bird program which enable us to learn about WNV activity and target our control,” said Craig Downs, general manager for the District. “We are still asking the public to remain diligent in their own mosquito control efforts by checking their yards for breeding sources since they are generally the main source for mosquitoes in Contra Costa County.”

August 26 , 2004

CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT REPORTS TWO MORE BIRDS WITH WEST NILE VIRUS.

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District (the District) received confirmation last night that two Cooper’s Hawks found in Contra Costa County have tested positive for West Nile virus (WNV). The infected birds were found on August 12, 2004 in Concord near Concord Blvd. and Bailey Road and on August 10, 2004 in Pleasant Hill near Contra Costa Blvd. and Gregory Lane. These are the third and fourth confirmation of the presence of WNV in Contra Costa County. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“We are continuing to provide enhanced county wide mosquito control with focus on areas with high mosquito populations or direct indication of WNV activity,” said Craig Downs, general manager for the District. “We ask that the public remain diligent in their own mosquito control efforts by checking their yards for breeding sources since they are generally the main source for mosquitoes in Contra Costa County.”

August 12 , 2004

CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT REPORTS SECOND BIRD WITH WEST NILE VIRUS

CONCORD, CALIFORNIA. The Contra Costa Mosquito & Vector Control District (the District) received confirmation last night that an American crow found in Contra Costa County has tested positive for West Nile virus (WNV). The infected bird was found on July 29, 2004 in the town of Knightsen off Delta Road. This is the second confirmation of the presence of WNV in Contra Costa County. There have been no human cases or mosquitoes found with the virus in Contra Costa County to date.

“Our mosquito control efforts have been enhanced county wide with focus on areas with high mosquito populations or direct indication of WNV activity, such as Knightsen,” said Craig Downs, general manager for the District. “We will continue to provide the best possible surveillance and control of mosquitoes in Contra Costa County that is possible in order to protect public health.”

Knightsen, located in East Contra Costa County, is home to many small ranches. “Our main concern in this area is the possible breeding of mosquitoes in horse troughs, as well as back yard containers,” said Gale Jirik, operations manager for the District. “Horse owners should stock their horse troughs with mosquitofish available at our District, and contact their veterinarians regarding the vaccination of their horses. Currently, about half of the horses in California infected with West Nile virus have died.”

July 30 , 2004

WEST NILE VIRUS CONFIRMED IN BIRD IN CONTRA COSTA COUNTY

CONCORD, CALIFORNIA - The Contra Costa Mosquito & Vector Control District received confirmation last night that a scrub-jay found in Contra Costa County has tested positive for West Nile virus (WNV). This is the first confirmation of the presence of WNV in Contra Costa County. There have been no human cases or mosquitoes found with the virus in Contra Costa County or surrounding counties to date.

The infected bird was found in the City of Walnut Creek. The bird was taken to the California Animal Health and Food Safety Laboratory in Davis. Subsequent confirmatory testing was conducted by the Center for Vector-borne Diseases at UC Davis.

“This is evidence that our surveillance system is working,” said Craig Downs, general manager for the District. “We have been expecting the virus to arrive and have been preparing for some time. We will expand our surveillance and control efforts and respond accordingly in our continued effort to protect public health.”

March 9, 2004

FREE RODENT PREVENTION & CONTROL PRESENTATIONS
Free daytime and evening Rodent Prevention & Control Presentations are scheduled in June and September, 2004, at Contra Costa Mosquito and Vector Control District, 155 Mason Circle, Concord, CA as follows:

               Fred Walls, Vector Control Technician
                (925) 685-9301 x 121
                e-mail fwalls@ccmvcd.net

August 7, 2007

July 18, 2007

June 27, 2007

April 20, 2007

April 19, 2007

September 21, 2006

FOGGING FOR MOSQUITOES TO BE CONDUCTED TONIGHT ALONG CONTRA COSTA COUNTY WATERFRONT

September 18, 2006

FOGGING FOR MOSQUITOES TO BE CONDUCTED WEDNESDAY IN MARTINEZ AND WATERFRONT

September 13, 2006

FOGGING FOR MOSQUITOES IN CONTRA COSTA COUNTY TONIGHT

September 6, 2006

MOSQUITO DISTRICT TARGETS MOSQUITOES IN CONTRA COSTA COUNTY WATERFRONT AREA - SPRAYING BY HELICOPTER TOMORROW NIGHT

September 5, 2006

MOSQUITO DISTRICT URGES HELP FROM PUBLIC TO LOCATE BACKYARD SOURCES - MORE FOGGING PLANNED TO REDUCE MOSQUITOES

August 30, 2006

WEST NILE VIRUS POSITIVE MOSQUITOES TRIGGER FOGGING IN PLEASANT HILL

August 24, 2006 MEDIA OPPORTUNITY BELOW

CHICKENS TEST POSITIVE FOR WEST NILE VIRUS IN MARTINEZ, OAKLEY, AND HOLLAND TRACT

August 14, 2006

CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT URGES RESIDENTS TO PROTECT THEMSELVES FROM MOSQUITO BITES

July 27, 2006

TWO MORE MOSQUITO SAMPLES AND THREE MORE DEAD BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

July 25, 2006

WEST NILE VIRUS POSITIVE MOSQUITOES FOUND IN CONTRA COSTA COUNTY

July 20, 2006

TWO MORE DEAD BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

July 18, 2006

FOURTH DEAD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

July 12, 2006

SECOND DEAD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

March 2006

WEST NILE COULD GET WORSE

September 27, 2005

THREE MORE WEST NILE VIRUS CASES REPORTED IN CONTRA COSTA COUNTY

September 19, 2005

ONE MORE WEST NILE VIRUS CASE REPORTED IN CONTRA COSTA COUNTY

September 12, 2005

FOUR MORE PEOPLE TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

August 31, 2005

THIRD PERSON TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

August 29, 2005

SECOND PERSON TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

August 22, 2005

SIX MORE BIRDS AND THREE MORE HORSES TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

August 16, 2005

MOSQUITO AND VECTOR CONTROL DISTRICT URGES RESIDENTS TO RID MOSQUITO SOURCES FROM THEIR PROPERTIES

August 11, 2005

FIRST HORSE AND THREE MORE BIRDS TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

August 9, 2005

SPRAYING FOR ADULT MOSQUITOES TO TAKE PLACE IN BRENTWOOD AND DISCOVERY BAY TONIGHT

--Truck-mounted fogging will reduce adult mosquitoes that can transmit West Nile virus--

August 4, 2005

MORE MOSQUITOES AND BIRDS INFECTED WITH WEST NILE VIRUS FOUND IN CONTRA COSTA COUNTY

--Residents participate in locating dead birds via state hotline--

August 1, 2005

MOSQUITOES FOUND WITH WEST NILE VIRUS ON BETHEL ISLAND - ANOTHER BIRD FOUND IN BRENTWOOD

--Mosquito Control District continues to enhance control and public outreach efforts--

July 28, 2005

MORE DEAD BIRDS FOUND POSITIVE WITH WEST NILE VIRUS IN DANVILLE AREA

--Possibility of higher risk indicates need for mosquito repellent and residential source checking--

July 25, 2005

BIRD INFECTED WITH WEST NILE VIRUS FOUND IN CONCORD

July 21, 2005

BIRD INFECTED WITH WEST NILE VIRUS FOUND IN PITTSBURG

July 18, 2005

MOSQUITOES INFECTED WITH WEST NILE VIRUS CONFIRMED IN CONTRA COSTA COUNTY

July 14, 2005

DANVILLE BIRD TESTS POSITIVE FOR WEST NILE VIRUS

THIRD BIRD TESTS POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY

FIRST BIRDS OF THE YEAR TEST POSITIVE FOR WEST NILE VIRUS IN CONTRA COSTA COUNTY