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West Nile, Contra Costa Mosquito

First mosquitoes carrying West Nile virus found in Orange County

Mosquitoes testing positive for West Nile virus were discovered in Anaheim and Garden Grove, the Orange County Mosquito and Vector Control District reports.

The Mercury News · 19h

West Nile virus detected in Contra Costa County

There have been three human cases of West Nile Virus in California this year, with one fatal case, according to the California Department of Public Health.

The Salt Lake Tribune on MSN · 25m

West Nile virus found in another Utah county — earlier than ever before

As of Sunday, West Nile has also been detected in Box Elder, Salt Lake, Uintah and Utah counties, according to the Utah Department of Health and Human Services.

Hoodline45m

First Avian West Nile Virus Case of 2025 Reported in Contra Costa County, San Ramon Bird Tests Positive

Contra Costa County confirms its first 2025 avian West Nile virus case in a California scrub jay, prompting community engagement and preventive measures.

Officials issue warning after confirming troubling West Nile virus trend: 'It is much better to avoid getting this'

The city reported that it had discovered its first West Nile-positive mosquito for the 2025 season in early July. The Daily ...

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West Nile, Contra Costa Mosquito

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