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

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

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.

In 2024, Weld County had 15 reported cases of human West Nile virus, according to the website. The year before reached 52 cases.

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

Boulder County Public Health, Weld County and the city and county of Broomfield have confirmed within two days that there have been the first positive tests of West Nile virus in mosquitoes in ...

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.

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