Frisco officials confirmed another three mosquito pools tested positive for West Nile virus in a Sept. 20 city news release.

What happened?

According to the release, the positives came from mosquito pools located near:
  • Oakbrook Park
  • The intersection of North County Road and Eldorado Parkway
  • The intersection of Potomac Lane and Parliament Lane


The new positives bring the city’s 2024 mosquito season total so far to 16. Some of the pools have tested positive multiple times, including Oakbrook Park, which had its third positive on Sept. 20.

In response to the new positives, a third-party contractor sprayed the areas surrounding the positives with an adulticide—a mosquito-specific insecticide—Sept. 21-22 in accordance with the city’s Mosquito Surveillance and Response Plan.


Adulticides target the adult mosquitos that could carry West Nile virus, according to the Centers for Disease Control and Prevention. The spraying is harmless to pets and people when done correctly.



Keep in mind

Frisco tests mosquito pools for West Nile virus annually during the May 1-Nov. 15 mosquito season. Results from the city’s pool testing are then uploaded to Frisco’s mosquito surveillance map, a public database that has recorded all West Nile positives and spraying areas since 2018.


Going forward

The Texas Department of State Health Services recommends residents take precaution against mosquitos with the following steps:
  • Wear: Wear long sleeves and pants outside at dawn and dusk when mosquitoes are most active.
  • Apply: Use insect repellants if outside. Approved repellents contain DEET, picaridin or oil of lemon eucalyptus.
  • Remove: Drain standing water that collects in bird baths, French drains, clogged gutters, saucers under potted plants and splash blocks. The mosquitoes that carry the virus can breed in stagnant water.
More information on the city’s mosquito surveillance plan and how to prevent mosquito breeding and bites can be found at friscotexas.gov/mosquitoes or by contacting the city’s Health & Food Safety Division at 972-292-5304.