West Nile Virus Activity Continues To Be Detected

Release date: 
Sep 16

Cotati, Ca- The Marin/Sonoma Mosquito & Vector Control District (District) confirmed that more dead birds have tested positive for West Nile virus in Marin and Sonoma counties. "Although summer is waning, four birds have already tested positive for West Nile virus this month," said Sarah Brooks, Lead Biologist. "It's important that the public continues to report dead birds and take personal protection measures against mosquitoes."

The dead birds that tested positive were collected from various locations in Novato, Sonoma and Sebastopol. Adult mosquito surveillance traps will be set near the locations of the dead birds to monitor the abundance of mosquitoes and virus activity. More information regarding West Nile virus activity in Marin and Sonoma counties can be found on the District's website at www.msmosquito.com.

2016 West Nile Virus Activity 

Sonoma County: 7 dead birds and 1 positive mosquito pool (sample)

Marin County: 5 dead birds

Residents are being urged to continue to report dead birds and to reduce mosquito production sites on their properties. 

Here are a few simple ways to help reduce exposure to mosquitoes and lessen the risk of West Nile virus:

  • Contact the Marin/Sonoma Mosquito & Vector Control District (707-285-2200) if you have a mosquito-related problem that you cannot resolve on your own. 
  • Check and maintain all window and door screens.
  • Continue to report dead birds to the West Nile Virus hotline at 1-877-WNV-BIRD or online.
  • Wear mosquito repellent when outdoors at dusk and dawn. Use a repellent containing one of the following active ingredients: DEET, Picaridin, oil of lemon eucalyptus, or IR3535. 
  • Avoid being outdoors during peak mosquito activity (dawn and dusk).
  • Click here for our Backyard Checklist to help identify areas around your home that may produce mosquitoes.