Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West ...

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

Boulder County Public Health and Weld County both confirmed within two days that there have been the first positive tests of ...

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

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

Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West Nile. No other testing sites returned positive results.

A Lafayette man has been diagnosed with West Nile virus, making him the first confirmed human case of the mosquito-borne infection in Boulder County for 2023.

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

West Nile Virus is the leading mosquito-borne disease in the U.S., spread through bites from infected mosquitoes.

The state’s West Nile virus season appears to be ahead of schedule this year, after two more Colorado counties detected the ...