News Flash


Posted on: May 14, 2021

Mosquito Pool Tests Positive for West Nile Virus; City to Increase Surveillance

(May 14, 2021) The City of Frisco received confirmation a mosquito pool tested ‘positive’ for West Nile virus (WNV) near the intersection of McCommas Dr. at Michelle Dr. in the Creekside at Preston neighborhood. The city is increasing surveillance efforts in public areas of that neighborhood and in the Panther Creek Estates and Dominion at Panther Creek neighborhoods. [ See map PDF ] No treatment will be scheduled for application at this time.

“It’s earlier than usual to have a ‘positive’ test pool, so now is a good time to refresh yourself on the best ways to minimize mosquitoes in your yard and how to fight the bite,” said Julie Fernandez, Environmental Health Supervisor.

Many pools damaged in the extreme winter weather may still be in need of repair and hold stagnant water. Homeowners are reminded to also treat their backyard pools if evidence of mosquito larvae is found.

 The City of Frisco supports precautionary steps promoted by the Texas Department of State Health Services (DSHS), and commonly referred to as “The Four D’s”:

  • DEET: Use insect repellants every time you go outside. Approved repellents contain DEET, picaridin or oil of lemon eucalyptus.
  • DRAIN:  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.
  • DRESS: Wear long sleeves, pants at dawn and dusk.
  • DUSK OR DAWN: Avoid outdoor activities during these hours when mosquitoes are most active.  

In accordance with its Mosquito Surveillance and Response Plan, Frisco began testing for mosquitoes May 1. No human cases of the virus are confirmed in Frisco.

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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