News Flash


Posted on: September 6, 2018

One Mosquito Pool Tests Positive for WNV; City to Increase Surveillance Efforts, Larviciding


(September 6, 2018) The City of Frisco will treat for mosquitoes after receiving confirmation one mosquito pool tested ‘positive’ for West Nile virus (WNV).

Staff will continue to use larvicide to target areas of standing water in areas north of Panther Creek and Teel Parkways (near Northwest Community Park). Staff will also work with the city’s third-party contractor to ramp up the mosquito surveillance program, which identifies potential breeding hazards citywide.

This confirmation is the first ‘positive’ pool received in Frisco so far this year. No human cases of the virus have been reported in the city.

“With all the rainfall we’ve received in recent weeks, it’s important for people to remember to drain the standing water around their homes,” said Julie Fernandez, Frisco’s Environmental Health Supervisor.

“Mosquitoes can hatch in less than a week, in as little as a half-inch of water. That’s why it’s critically important to check for standing water in places like flowerpot trays, drains, and uncovered trash cans, to name a few.”

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. Weekly testing will continue through the second week of November.

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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