Latest round of mosquito tests negative for West Nile


The City of Cedar Park announced last week that a new round of tests for West Nile Virus came back negative. The testing is a part of the city’s partnership in the Williamson County and Cities Health District’s mosquito management program. This negative test was received in a lab result from the Texas Department of State Health Services lab in Austin.

“The city has been diligently working to drain and treat standing water to help prevent mosquito breeding and thanks residents for their hard work in draining and treating standing water at their own homes,” said city spokesperson Jennie Hurta. “The city and Health District strongly encourage everyone to remain vigilant about protecting themselves from mosquito bites and preventing mosquito breeding on their personal property — especially

considering forecasted rainfall this week.”

There are currently no reported human cases of West Nile Virus in Cedar Park. Williamson County has seen no reported human cases since 2016. West Nile Virus should not be confused with other mosquito-borne viruses, such as Zika. The Health District has six traps at various locations throughout Cedar Park. The species that previously tested positive is Culex quinquefasciatus (southern house mosquito). This species has a flight range of about one

mile. All positive results so far this year have come from the area of southwest Cedar Park. This latest negative result was taken on Sept. 18, from an expanded trapping site near Cypress Creek Road and Lakeline Boulevard where a previous positive sample was taken on Sept. 13. These expanded traps were set up after a positive test sample was collected near the intersection of Cypress Creek Road and Sun Chase Blvd. on Sept. 6.

That trap had a previous positive result from a sample taken at the beginning of Aug. as well.

The city is continues to follow the Health District’s Best Practices for Integrated Vector Management (IVM) which call for continued enhanced monitoring and testing and increased public outreach and education.

City crews remain vigilant about draining and treating standing water on city-owned land, where possible, but need citizens’ continued help. Because mosquitoes breed in standing water the city is imploring residents to continue draining or treating any standing water on their own property. Residents may also report standing water on public or private property by using the

CP Connect 2.0 app or so that city crews may investigate and take appropriate action.

For more information on mosquito safety, please visit the Williamson County and Cities Health District’s website at

-_williamson_county/index.php. For more information about West Nile Virus visit