HAYWARD, CA - To date, Alameda County Mosquito Abatement District has detected 4 dead birds and 7 groups of mosquitoes which have tested positive for West Nile virus.  The birds were collected from Union City and Castro Valley. The mosquitoes were collected in Union City and Hayward.  Recent West Nile virus positive detections indicate heightened virus transmission in the Union City area west of…

HAYWARD, JUNE 7- Mosquitoes and birds infected with West Nile virus have been detected near Ponderosa Cove Park in Union City, CA. In response, the Alameda County Mosquito Abatement District will be treating for adult mosquitoes on Friday, June 8th from approximately 10pm to 12am, weather permitting. District personnel will be applying Pyrenone 25-5 Public Health Insecticide, registered by the US…

HAYWARD, CA - To date, Alameda County Mosquito Abatement District has detected one dead bird and one mosquito which tested positive for West Nile virus.  The bird was collected in Union City and the mosquito was collected in Hayward.

HAYWARD, CA - The Alameda County Mosquito Abatement District is reporting a dead bird that tested positive for West Nile virus.  This is the County's first indication of active virus transmission this year.  The bird was collected from Union City and tested at the District laboratory on May 24, 2018.

SACRAMENTO, CALIFORNIA  – There has been a steep rise in detections of invasive mosquito species in California, according to the California Department of Public Health, which increases the risk of local transmission of imported diseases. At the same time, lifted water restrictions in the state allows for the return to water practices by Californians that increase mosquito habitats.
Two invasive…