St. Louis encephalitis virus was detected in a mosquito pool in northeast Fort Collins, with no human cases reported; experts highlight the importance of surveillance for mosquito-borne diseases.

Denver government emphasized overdose prevention on International Overdose Awareness Day, promoting resources and harm reduction strategies via social media to tackle the issue.

Fort Collins will spray for West Nile virus on Aug. 28, with a backup date of Aug. 31. Residents in the affected area have been advised on precautions.

Larimer County reports its first West Nile virus death of the year, with health officials emphasizing precautions as the virus continues to pose a threat.

The Douglas County Health Department is hosting a Community Open House with health services like screenings and immunizations on Sept. 4, from 4-6 pm.

Fort Collins plans mosquito spraying on August 21 to combat West Nile virus, advising residents to stay indoors during the procedure and offering a GPS tracking system for awareness.

A cat in Evergreen, Jefferson County, died of plague, marking the first local case since 2023, with health officials urging disease prevention measures.

DDPHE confirms Denver's first human case of West Nile virus in 2025, urging preventive measures against mosquito-borne disease, particularly during peak mosquito hours.

Colorado health officials confirm a measles case in an out-of-state visitor and warn of potential exposure at Monarch Mountain on July 25. They urge monitoring for symptoms and vaccination.

Boulder addresses E. coli concerns in Boulder Creek, implementing an E. coli TMDL Plan to improve water safety and educating the public on safe creek recreation practices.

Boulder increases water safety efforts ahead of summer, highlighting rules for swimming in natural waters and offering free drowning prevention classes.

Several new measles cases linked to Denver Airport and recent travel have been confirmed in Colorado. Officials warn the public of exposure risks and urge vaccination checks.

Colorado Governor Jared Polis signed a bill protecting transgender individuals' access to gender-affirming health care, countering restrictive policies in other states.