News Flash


Posted on: August 20, 2021

City to Spray Overnight August 20 & 21 after Mosquito Pool Tests Positive for WNV

(August 20, 2021) This week one mosquito pool in Frisco tested ’positive’ for West Nile Virus (WNV). The location is near North County Rd south of Eldorado Pkwy. In response, the city will ground spray overnight August 20 and 21 in part of the Meadow Hill Estates and Frisco Springs neighborhoods.  (see map)

Weather permitting, a third-party contractor will apply treatment starting at 9 o’clock tonight, August 20, through 5 a.m. Saturday, August 21. The schedule is the same overnight Saturday through 5 a.m. Sunday, August 22.

This makes 25 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. 

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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