News Flash


Posted on: May 29, 2020

Mosquito Pool Tests Positive for WNV; City to Treat with Larvicide, Increase Surveillance

(May 29, 2020) The City of Frisco confirms one mosquito pool has tested ’positive’ for West Nile Virus (WNV). As a result, the City of Frisco  is increasing surveillance efforts and treating areas of stagnant water along Hickory St (near Oakbrook Park) with larvicide. No human cases of the virus are confirmed in Frisco. This is the first positive pool in Frisco this season.

“With all the recent rainfall, it’s important for people to remember to drain the standing water around their homes," said Julie Fernandez, Environmental Health Supervisor.  "Although not all mosquito species transmit the disease, it just takes one bite from an infected mosquito to do so. That’s why we’re increasing surveillance all over our city and will be larviciding any areas where we see stagnant water.” 

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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