Both Boulder and Weld County have recorded their first positive West Nile Virus (WNV) mosquito pools of the season. While the Boulder County positive pool was combined from Erie and Superior, this is an indication that WNV is present in Boulder County. This, along with the positive pools detected in Weld County, makes it safe to assume that mosquitoes from any area are potentially positive. View the Boulder County news release. View the Weld County news release.

The City of Longmont contracts with Vector Disease Control International (VDCI) to spray local neighborhoods in Longmont to control the spread of West Nile Virus. Spraying is triggered – per predetermined spray area – when traps in that area exceed 150 mosquitoes per trap and when West Nile Virus positive mosquitoes are discovered in Larimer, Boulder or Weld Counties. Boundaries of the predetermined spray areas can be seen on a map provided by the City and VDCI on the West Nile Virus webpage. When the triggering events occur, notice is provided on this webpage on Tuesdays that spraying will occur later that week – typically on Thursday evenings — giving residents 48 hours’ notice of any spraying.

Boulder County Public Health and Longmont officials urge residents to take necessary precautions this holiday weekend to protect themselves. Keep safe, remember the 4Ds:

1. Use DEET-enhanced insect repellent or alternative
2. DRESS in light colors and loose-fitting long sleeves and pants
3. Avoid the outdoors from DUSK until DAWN
4. DRAIN standing water outside your home

Learn more about West Nile Virus, the City’s integrated pest management program and how to protect yourself from West Nile Virus on the City’s West Nile Virus webpage or by calling 303-651-8416.