From Contra Costa MVCD
July 19, 2018
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.
“We are seeing a typical summer pattern where West Nile virus activity starts in the warmer areas of the Central Valley and gradually moves west into Contra Costa County as our weather warms up.” said Steve Schutz, Ph.D., s cientific programs manager.
Hot weather speeds both virus growth and mosquito development, and serves as an important reminder to residents to defend themselves against West Nile virus and other mosquito-borne illnesses.