Home Oakley Six Chickens Test Positive for West Nile in Oakley Area

Six Chickens Test Positive for West Nile in Oakley Area

by ECT

CONCORD, CALIFORNIA – – The Contra Costa Mosquito & Vector Control District confirmed Wednesday that six sentinel chickens from two locations in Contra Costa County have tested positive for West Nile virus.

One chicken was located at Holland Tract and five others in Oakley. Fogging for adult mosquitoes is scheduled to take place in Oakley on Thursday evening.

“The District’s Sentinel Chicken Program is an important way to identify areas at risk of West Nile virus because the chickens provide proof that the virus is active in a particular area,” said Steve Schutz, Ph.D., scientific program manager for the District. “In this case, we plan to be out after sunset tomorrow -when mosquitoes are active- to control adult mosquitoes where the chickens confirmed recent virus activity.”

The District announced Wednesday that mosquito fogging would occur Thursday:


The area to be treated is bordered on the north by Fetzer Lane and Monet Drive; on the east by Picasso Drive; on the south by West Cypress Road; and on the west by Jordan Lane, 4th Street, and Orchard Park Drive.

TIME: This area will be fogged between the hours of 7:30 p.m. and 11:00 p.m., weather permitting.

Residents are urged to help reduce their risk of contracting mosquito-borne diseases by following these guidelines:

  • Dump or drain standing water. Mosquitoes can’t begin their lives without water.
  • Defend yourself against mosquitoes by using repellents containing DEET, Picaridin, or Oil of Lemon Eucalyptus.
  • Avoid being outdoors when mosquitoes are present, typically dawn and dusk.
  • Report neglected swimming pools by calling 925-771-6195 or visiting www.ContraCostaMosquito.com Anonymous calls accepted. Just one neglected pool can produce more than 1 million mosquitoes and affect people up to five miles away.
  • Report dead birds to the state hotline: 1-877-968-2473. All reports are crucial, even if the bird does not meet criteria for testing.

Since 2005, 54 people in Contra Costa County have been diagnosed with West Nile virus. In 2006, two people died from the disease. Recent studies have shown that the majority of cases are not diagnosed and are grossly underreported. For 2015, a total of three groups of mosquitoes, eight birds, and 14 chickens have tested positive for the virus.

Mosquito Samples: 3

nDate ReportedCityCross StreetsSpecies
16/15/15OakleyE. Summer Lakes Dr. x E. Cypress Rd. Culex tarsalis
26/15/15OakleyOakley Rd. x Main St.Culex tarsalis
38/17/15MartinezMococco Rd. x Marina Vista Ave.Culex tarsalis

Dead Birds: 8

nDate ReportedCityCross StreetsSpecies
17/14/15OakleyNeroly Rd. x Oakley Rd.American Crow
27/23/15DanvilleRoan Dr. x Clydesdale Dr.American Crow
38/9/15Pleasant HillChilpancingo Pky x Camelback Rd.Steller’s Jay
48/21/15ConcordPeach Pl. x Oak Grove Rd.American Crow
58/31/15Walnut CreekLilac Dr. x Newell Ave.American Crow
69/1/15PittsburgBuchanan Rd. x Loveridge Rd.American Crow
79/3/15BrentwoodLone Tree Way x Jeffery WayAmerican Crow
89/9/15San RamonDos Rios Dr. x Bollinger Cyn Rd.American Crow

Sentinel Chicken Flocks: 2

Note: Chickens do not die from West Nile virus. They develop antibodies to the virus which is detected in their blood.

# of Chickens out of 10 (10 per Flock)Date BledArea
2/107/13/15Holland Tract
4/107/27/15Holland Tract
1/108/24/15Holland Tract

Contra Costa Mosquito & Vector Control District, an independent special district and 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, horse troughs or neglected swimming pools.

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