Press Release From Contra Costa MVCD
July 26, 2018
West Nile Virus Activity Increases with Prolonged Heat
CONCORD, CALIFORNIA – The Contra Costa Mosquito & Vector Control District reports mosquitoes from two locations in Contra Costa County have tested positive for West Nile virus.
The infected mosquitoes were caught in traps in Discovery Bay and an agricultural area east of Brentwood. The District uses this information to direct prevention and control efforts within the vicinity.
The confirmation of infected mosquitoes comes less than one week after the District confirmed chickens tested positive for antibodies against West Nile virus near Knightsen.