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

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 ...

Read more <a href=" Williamson County officials announced Thursday that they’ve confirmed the first human case of West Nile ...

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.

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.

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