News Flash


Posted on: May 21, 2021

Two Mosquito Pools Test Positive for West Nile Virus; City to Increase Surveillance

(May 21, 2021) The City of Frisco will increase surveillance after receiving confirmation two mosquito pools tested ’positive’ this week for West Nile Virus (WNV). One is near Copper Point Ln. in the Village Lakes community (see map PDF).  The other is near Shaddock Creek Ln. in the Shaddock Creek Estates community (see map PDF). In response, the city is increasing surveillance efforts in some public areas in Heritage Lakes, Village Lakes, Crosspoint Park and Park Place Estates, as well as, the neighborhoods around the Trails of Frisco Golf Club and Cottonwood Creek Park and Trail.

“The city will not be spraying at this time. With all the rain we’ve experienced this month, our best course of action is to continue surveillance,” said Julie Fernandez, Environmental Health Supervisor. “During increased surveillance efforts our environmental health staff and a third-party contractor increase ‘boots on the ground’ to directly look for areas of standing water which could turn stagnant; and if needed, treat with larvicide. 

Homeowners are also reminded to treat their backyard pools if evidence of mosquito larvae is found, especially those who have pools that were damaged during the extreme winter weather.

 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 this year.

 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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