West Nile Virus Detected in Weld County Mosquitoes; Human Cases Noted
Mosquitoes in Weld County have tested positive for West Nile virus. Although no human cases are currently active in the county, health officials anticipate an increase due to hot weather and the expanding mosquito season.
Denver, CO, July 23, 2026 —
Weld County, CO – Mosquitoes in Weld County have recently tested positive for West Nile virus, prompting a reminder from local health officials about mosquito bite prevention. While no human cases of the virus are currently active in the county, the detection in mosquito populations serves as an early indicator of the virus’s presence.
Health officials are anticipating a potential increase in West Nile virus activity. This expectation is attributed to the ongoing hot weather conditions and the consequently expanding mosquito season. West Nile virus is transmitted to humans through the bite of an infected mosquito.
The Weld County Department of Public Health and Environment typically monitors mosquito populations for the presence of West Nile virus throughout the season. The detection of the virus in these mosquito pools indicates that the virus is circulating in the environment.
Residents are advised to take precautions to protect themselves from mosquito bites. These measures commonly include:
- Using insect repellent containing DEET, picaridin, oil of lemon eucalyptus, or other EPA-approved ingredients.
- Wearing long-sleeved shirts and long pants, especially during dawn and dusk when mosquitoes are most active.
- Draining standing water around homes, as mosquitoes breed in stagnant water. This includes emptying bird baths,}$checking rain gutters, and ensuring proper drainage in yards.
- Securing or repairing window and door screens to prevent mosquitoes from entering homes.
The presence of West Nile virus in mosquito populations underscores the importance of community-wide efforts to reduce mosquito breeding sites and to practice personal protective measures. Further information and updates will be provided by local health authorities as the season progresses.
Story summarized from the original created by Adam Rosen on kdvr.com, see more information here.
