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

Symptoms of illness may appear three days to two weeks after an infection, Weld County said last week. Most people show no ...

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

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.

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

The Pueblo Department of Public Health encouraged the community to protect themselves against West Nile Virus.

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

Our drinking water remains safe, but other water concerns lurk in the rivers and lakes around Austin following the floods.

According to Mesa County Public Health, the most common tick found on the Western Slope is the Brown Dog Tick, which can ...