West Nile Virus: Mosquitoes Test Positive In Contra Costa County

From the Concord, CA Patch
July 29, 2022

CONTRA COSTA COUNTY, CA — A group of mosquitoes has tested positive for West Nile Virus in Contra Costa County, the Contra Costa County Mosquito and Vector Control District said Friday.

The mosquitoes were collected from a trap in the city of Oakley and marked the first group of mosquitoes to test positive for WNV so far this year in the county.

Certain species of birds may carry WNV. Once a mosquito bites an infected bird, the mosquito can become infected with the ability to transmit WNV to another animal or a person through a single mosquito bite.

Since 2005, 75 people in Contra Costa County have been diagnosed with West Nile virus. In 2006, two people in the county died from the disease.

Read more