Most West Nile cases in Colorado happen between July and September, though mosquitoes can live until the first snow or hard ...

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 ...

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.

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

Mosquitoes are a familiar nuisance each summer when you are trying to enjoy the outdoors. Unfortunately, some mosquitoes can ...

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

West Nile virus has been found in Boulder County. Boulder County Public Health confirmed that, last week, mosquitoes trapped on the east side of Niwot tested positive for West Nile.

Colorado's West Nile virus season is starting a bit early, but experts aren't sure whether a wet spring will translate into a tough year for the mosquito-borne illness.