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West Nile, Contra Costa Mosquito

First mosquitoes carrying West Nile virus found in Orange County

“Multiple mosquito samples and a dead bird testing positive for West Nile virus indicate that the virus is circulating in the community,” said Amber Semrow, OCMVCD’s director of Scientific and Techni...

· 19h

West Nile virus detected in Contra Costa County

· 24m · on MSN

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

· 19h

Vanderburgh County resident reported as first West Nile case of the year for Indiana

The Indiana Department of Health announced Tuesday that the state's first case of West Nile virus for 2025 has been reported in a Vanderburgh County resident.

· 1d

Significant amount of West Nile carrying mosquitos detected in Tracy

· 1d

West Nile virus found in Norfolk

· 12h

West Nile virus detected in mosquitos in Salt Lake County

Utah does see around 12-13 cases of WNV in humans each year, according to Kacy Nowak, with the DHHS epidemiology team.

Colorado Public Radio · 13h

Colorado identifies first human West Nile virus cases of 2025, in Adams County

ABC15 Arizona · 1d

Maricopa County officials confirm first West Nile death of the year

Hoodline44m

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 Camera reported the news, saying that while West Nile virus season was starting early in Colorado's Front Range, experts weren't certain that this would translate into a heavy season for infections.

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