More Mosquitoes Test Positive for West Nile Virus in Contra Costa County (8/12/22)
First Invasive Aedes Mosquitoes Found in Contra Costa County (8/5/22)
First Mosquitoes Tests Positive For West Nile Virus in Contra Costa County (7/29/22)
First Dead Bird Tests Positive For West Nile Virus in Contra Costa County (5/17/22)