News Flash


Posted on: May 24, 2019

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

(May 24, 2019) The City of Frisco will apply larvicide in areas of stagnant water near the Cottonwood Creek Greenbelt after receiving confirmation a mosquito pool tested ‘positive’ for West Nile virus (WNV). City staff will also increase mosquito surveillance in the area. No human cases of the virus are confirmed in Frisco.

“This early in the ‘mosquito season’, research by the Centers for Disease Control (CDC) shows that larvicide is the most effective method to target mosquitoes early in their lifecycle,” said Julie Fernandez, Environmental Health Supervisor.

“Experts are telling us to expect a more active West Nile virus season than last year, so, as we approach the summer months, we’re stressing the importance of ‘fighting the bite’.”

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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