Most people who contract the West Nile Virus, don’t even know they have it. “Maybe about 70% of individuals who actually are ...

A crow from Walnut Creek has tested positive for West Nile virus (WNV) in Contra Costa County, confirmed the Contra Costa ...

West Nile virus activity is on the rise in some northern California counties, according to the Sacramento-Yolo Mosquito and ...

The Windsor-Essex County Health Unit (WECHU) has reported its first human case of West Nile virus of 2025. That's slightly later than last year, when the first human case appeared in July, according ...