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

Mosquitoes in two areas of Weld County have tested positive for West Nile virus, though no human cases have yet been reported ...

Mosquitoes carrying the virus were first identified in Colorado in 2003. That year resulted in the most human cases of West ...

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

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

DENVER ( KDVR) — The first trace of the West Nile virus this season was found in Denver through a positive mosquito sample.

The county also monitors for mosquitoes in a third area near Fort Lupton, but mosquitoes trapped there have not yet been found to be carrying the virus. Colorado’s first cases of mosquitoes carrying ...

Colorado’s first cases of mosquitoes carrying West Nile virus this year came early, with a sample of mosquitoes testing positive on June 23 in Larimer County.

This week, a sample of the mosquito population in Larimer County in Northern Colorado tested positive for West Nile virus.