First Detection of West Nile Virus for 2017 in Sonoma County

Release date: 
Aug 25

Cotati, CA. -The Marin/Sonoma Mosquito & Vector Control District (MSMVCD) has confirmed finding the first dead bird infected with West Nile virus (WNv) for 2017 in Sonoma County. The dead bird, an American Crow, was collected near Timber Springs Dr. and Timber Springs Ct. in Santa Rosa. 

"The prevention and control of mosquitoes and vector-borne disease is a responsibility we all share," said Nizza Sequeira, Public Relations Director for the Marin/Sonoma Mosquito and Vector Control District. "Residents can assist the District by reducing mosquito production on their properties and reporting mosquito problems." 

District staff will continue to trap, test, and monitor the abundance of adult mosquitoes in the area and perform control operations as necessary. Vector control technicians are inspecting all documented sources of mosquito production as well as checking for new sources.

Simple ways to help reduce exposure to mosquitoes and lessen the risk of WNv:

  • Report mosquito problems or any area that could be producing mosquitoes at or 1-800-231-3236.
  • Stock backyard ponds or other permanent water features with mosquitofish.
  • Report dead birds to the West Nile virus hotline at 1-877-968-2473 or online at
  • 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.