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

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

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

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

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

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

“The public needs to be vigilant, because West Nile virus has a permanent summer presence in Colorado.” Health officials expect human cases to increase as the hot weather continues throughout ...

Weld County announced on July 7 that two out of three Weld County mosquito trap zones have tested positive for West Nile ...

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. As health officials across the state ...

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

Colorado recorded 76 West Nile cases and zero deaths last year, according to health department data. But the state saw 634 cases and 51 deaths from the virus in 2023 and 207 cases and 20 deaths in ...

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.