Mosquito samples collected in six areas in Allegheny County have tested positive for West Nile Virus, according to the county ...

These are the first mosquitoes to test positive for the virus within the county since 2023, according to the county.

On Friday evening, the Allegheny County Health Department announced that West Nile Virus had been found in mosquito samples ...

Shasta County Mosquito and Vector Control found 2025's first mosquitoes carrying West Nile Virus in the county. Here's how to reduce bites.