west nile virus california

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West Nile virus, California

Highest number of West Nile cases in a day reported in these California counties

West Nile virus activity is on the rise in some northern California counties, according to the Sacramento-Yolo Mosquito and Vector Control District. Three dead birds and 13 mosquito samples tested positive for the virus on Aug. 13, “the highest number of positive results reported in a single day this year,” the agency said in a news release.

Modesto Bee · 1d

First human West Nile virus infection confirmed in Northern California

· 1d · on MSN

Butte County confirms first human case of West Nile virus in 2025

1don MSN

West Nile virus-infected crow found in East Bay

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

The Modesto Bee on MSN1d

Aerial spraying over north Modesto Friday night to combat West Nile Virus

Insecticide will be sprayed from an airplane over a north Modesto community Friday night to combat a growing presence of ...

The Daily Gazette26d

West Nile virus found in mosquito samples in California's Orange County

LOS ANGELES — Public health officials on Tuesday said mosquito samples collected in Anaheim and Garden Grove have tested positive for West Nile virus, the first confirmed virus activity this ...

Action News Now2d

First human case of West Nile Virus confirmed in Butte County

West Nile Virus infections generally fall into three categories. Eight in 10 people are asymptomatic, one in 5 experience mild to moderate symptoms, and less than 1 in 150 develop ...

3don MSN

No need to panic, but West Nile threat very real, Manitoba health expert says

Health experts say a confirmed case of West Nile Virus is connected to someone who travelled outside of Manitoba, but that ...

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