7 groups of mosquitoes test positive for West Nile Virus in Contra Costa this year

From KRON4
September 10, 2021

BRENTWOOD, Calif. (KRON) – Two more groups of mosquitoes tested positive for West Nile Virus, according to the Contra Costa Mosquito and Vector Control District.

Both groups were collected in eastern Contra Costa County: Holland Tract and an agriculture area near Brentwood.

There are now seven groups of mosquitoes and a dead bird that have tested positive for the virus in Contra Costa County this year.

Read more