WNV Risk in Contra Costa County Continues As More Birds and Sentinel Chickens Test Positive (9/18/20)
Continued Risk of West Nile Virus as More Mosquitoes Test Positive (9/11/20)
West Nile Virus Risk Increases As More Mosquitoes and Birds Test Positive for West Nile Virus in Contra Costa County (9/4/20)
More Mosquitoes, Birds Test Positive for West Nile Virus in Contra Costa County (8/28/20)
West Nile Virus Confirmed in Dead Bird and Mosquitoes in Contra Costa County (8/21/20)
First Sign of West Nile Virus Activity Confirmed in Mosquitoes in Contra Costa County (8/14/20)