West Nile Virus Persists - More Mosquitoes, A Bird, Chickens Test Positive (9/21/18)
More Mosquitoes and Birds Test Positive As West Nile Virus Activity Continues (8/31/18)
West Nile Activity Continues As More Mosquitoes Test Positive for the Virus (8/24/18)
West Nile Activity Increases As Birds, Mosquitoes, and Chickens Test Positive for the Virus (8/17/18)
Risk Grows as Birds, Mosquitoes Test Positive for West Nile Virus (8/10/18)
West Nile Virus Confirmed in Mosquitoes and First Dead Bird of the Year (8/3/18)
West Nile Virus Confirmed in Central Contra Costa County 7/26/18)
West Nile Virus Confirmed in Mosquitoes in Contra Costa County (7/19/18)
First Sign of West Nile Virus Activity of 2018 in Contra Costa County (7/13/18)