Frisco to Spray for West Nile Virus in Seven Neighborhoods

The City of Frisco confirmed that one mosquito pool tested positive for West Nile virus (WNV) this week. In response, the city’s third-party contractor will perform ground spraying overnight starting at 9 p.m. on Saturday, August 15, through 5 a.m. Sunday morning. Spraying will continue on Sunday night, August 16, ending at 5 a.m. Monday morning.

Weather and wind permitting, the treatment will cover specific neighborhoods including the Downtown Rail District, Hickory Springs, Oakbrook Park Estates, Woodstream, and Hickory Hills. Residents can view the affected areas on a map available as a PDF from the city.

This detection marks the seventh positive mosquito pool in Frisco this year. The city noted that no human cases of WNV have been confirmed in Frisco in 2026. According to the city’s Mosquito Surveillance and Response Plan, Frisco tests for mosquito pools annually from May 1 through November 15. Residents can view locations and positive pool data from previous years on the GIS Mosquito Dashboard.

The Texas Department of State Health Services (DSHS) urges residents to take precautionary steps against mosquito bites. These measures include wearing long sleeves and pants outside at dawn and dusk when mosquitoes are most active. Residents should apply insect repellants containing DEET, picaridin, or oil of lemon eucalyptus every time they go outside.

Additionally, the city advises draining standing water that collects in bird baths, French drains, clogged gutters, saucers under potted plants, and splash blocks at the end of gutter downspouts. Mosquitoes that carry WNV can breed in stagnant water.

For more information on the city’s plan and prevention tips, residents may visit Friscotexas.gov/Mosquitoes or contact the City of Frisco’s Health & Food Safety Division at 972-292-5304.