News Flash


Posted on: July 21, 2017

Mosquito Pool Tests 'Positive' for WNV; Frisco to Spray Saturday, Sunday Nights

(July 21, 2017) The City of Frisco will spray for mosquitoes after receiving confirmation a mosquito pool tested ‘positive’ for West Nile virus (WNV).

A third party contractor will use a utility task vehicle (UTV) to target off-road locations on city-owned property surrounding Oakbrook Park. On the first night, spraying will begin at 9 p.m. Saturday, July 22 and continue through 6 a.m. Sunday, July 23.

Spraying will resume 9 p.m. Sunday, July 23 and continue through 6 a.m. Monday, July 24.

“Because the North Texas region is seeing an increase in the mosquitoes that carry West Nile virus, we’re targeting adult mosquitoes by spraying the city-owned greenbelt,” said Patrick Prather, the city’s contracted entomologist.

City staff will continue to monitor the impacted area, as well as apply larvicide, as needed.

This is the third ‘positive’ pool confirmed in Frisco this year. No human WNV cases are confirmed in the city.

The City of Frisco supports four precautionary habits promoted by the Texas Department of State Health Services.

  • Use approved insect repellents: Use repellent every time you go outside. Approved repellents contain DEET, picaridin or oil of lemon eucalyptus. Follow label instructions.
  • Drain standing water: Drain 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 breed in stagnant water.
  • Wear long sleeves, pants at dawn and dusk (when mosquitoes are most active).
  • Use air conditioning: Make sure doors and windows are screened – and those screens are intact.

In accordance with its plan, Frisco began testing for mosquitoes May 1.

For more information on the city’s Mosquito Surveillance and Response Plan, visit or contact the City of Frisco’s Health & Food Safety Division at 972-292-5304.

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