Measles case confirmed in an out-of-state visitor near Monarch Pass, Colorado; public warned of possible exposure.

The Denver Department of Public Health and Environment announced Monday that the city's first human case of West Nile virus ...

Eleven people in Colorado have tested positive for West Nile this year, including five who developed neurologic symptoms and ...

Health officials are urging Denver residents to take extra precautions with the first human case confirmed in the city.

The Colorado Department of Public Health and Environment confirmed a case of measles in an out-of-state resident who visited Monarch Mountain on July 25.

Another potential measles exposure site has been reported in Colorado, this time near Monarch Pass in Chaffee County.

Air quality alerts were issued across Wisconsin, Michigan, Pennsylvania, New York, Massachusetts, Vermont, Maine, Delaware, Texas and Colorado on Monday.

Millions are under air quality alerts as wildfire smoke blankets large swaths of U.S. Millions of people across the Upper ...

A visitor from out of state stopped at the gift shop atop Monarch Pass last week while contagious with measles, possibly ...

GRAND JUNCTION, Colo. (KJCT) - Officials have confirmed a measles case in Chaffee County. The Colorado Department of Public Health and Environment and Chaffee County Public Health say the case is an ...

The Trump administration is freezing $339 million in research grants to the University of California, Los Angeles, accusing ...