More Invasive Mosquitoes Found This Week in Contra Costa County (10/11/24) 

More Invasive Mosquitoes Found in Contra Costa County (9/27/24)

More West Nile Virus-Infected Mosquitoes and Another Invasive Mosquito Confirmed in Contra Costa County (8/30/24)

Invasive Aedes Aegypti Mosquito Found Again in Contra Costa County (8/27/24)

More West Nile Virus-Infected Mosquitoes and a Dead Bird Confirmed in Contra Costa County (8/23/24)

More West Nile Virus-Infected Mosquitoes, Chickens, and a Dead Bird Confirmed in Contra Costa County (8/16/24)

West Nile Virus-Infected Mosquitoes Confirmed in Contra Costa County (8/9/24)

First West Nile Virus Death Since 2006 Reported in Contra Costa County (7/26/24)

More West Nile Virus Infected Dead Birds Confirmed in Contra Costa County (6/21/24)

National Mosquito Control Awareness Week Begins on Sunday, June 16th (6/14/24)

First West Nile Virus Positive Bird of 2024 Confirmed in Contra Costa County (4/26/24)

CA Mosquito Awareness Week Begins with Concerns Over an Intense Mosquito Season (4/16/24)