News Flash


Posted on: September 17, 2021

One Mosquito Pool Tests Positive for WNV; City to Treat Overnight September 17-18

(September 17, 2021) This week one mosquito pool in Frisco tested ’positive’ for West Nile Virus (WNV) The location is near Copper Point Lane in the Village Lakes Neighborhood (see map).
In response, the city will conduct ground spraying overnight, September 17 & 18, in some areas of these neighborhoods: Village Lakes, Crosspoint Park, Park Place Estates, Pearson Farms, Heritage Village and Westfalls Village.

Weather permitting, a third-party contractor will apply treatment for two consecutive nights starting at 9 o’clock tonight, September 17, through 5 a.m. Saturday, September 18. The schedule is the same overnight Saturday through 5 a.m. Sunday, September 19.

This makes 30 positive mosquito pools in Frisco this season. Check out our GIS Mosquito Dashboard to see the locations. No human cases of WNV are confirmed in Frisco this year.

“As we head into fall, remember mosquitoes are still active,” said Julie Fernandez, Environmental Health Supervisor. “Please continue to follow the recommended guidelines to keep you and your family protected.”

Frisco residents are urged to ‘Wear, Apply and Remove’ as a precaution against mosquito bites.  The precautionary steps are promoted by the Texas Department of State Health Services (DSHS) and outlined below: 

  • WEAR: Wear long sleeves, pants outside at dawn and dusk when mosquitoes are most active.
  • APPLY: Use insect repellants every time you go outside. Approved repellents contain DEET, picaridin or oil of lemon eucalyptus.
  • REMOVE:  Drain standing water that collects in bird baths, French drains, clogged gutters, saucers under potted plants and ‘splash blocks’ (at end of gutter down spout). The mosquitoes that carry WNV can breed in stagnant water.

In accordance with its Mosquito Surveillance and Response Plan, Frisco began testing for mosquitoes May 1.  For more information on the city’s plan, visit or contact the City of Frisco’s Health & Food Safety Division at 972-292-5304.

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