News Flash


Posted on: September 7, 2017

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

(September 7, 2017) The City of Frisco will spray for mosquitoes after receiving confirmation a mosquito pool tested ‘positive’ for West Nile virus (WNV). 

Beginning Saturday, September 9, a third party contractor will drive a designated area south of Eldorado Parkway (between Independence Parkway and Custer Road) fogging for mosquitoes (see attached map).

Treatment will begin at 9 p.m. Saturday and continue through 6 a.m. Sunday, September 10.  Spraying resumes Sunday night at 9 p.m. and continues through 6 a.m. Monday, September 11.

This ‘positive’ pool confirmation bring the total to 14 in Frisco this year. Collin County and Denton County health officials have each confirmed one human WNV case in Frisco this season.

  • 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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