West Nile Virus
The Culex quinquefasciatus, or Southern house mosquito, can transmit West Nile virus. Photo courtesy of Texas A&M AgriLife.
Williamson County sees first West Nile case
Nalani Nuylan
The Williamson County and Cities Health District has confirmed the first human case of West Nile Virus, July 3.According to the health district, the individual is a resident in their 40s living in southern Williamson County.
Monday, July 14, 2025
This map shows where mosquito control spray was sprayed on July 12 and 13 to prevent more West Nile virus positive mosquitoes. (Courtesy Williamson County and Cities Health District)
Second West Nile mosquito found at Pinnacle Park
Kaitlyn Wilkes
Another mosquito trap near Pinnacle Park in southeast Georgetown returned a positive result on July 3 for West Nile virus.
Tuesday, July 16, 2024
Texas counties reporting mosquito virus activity, week 26 of the 2024 season. Illustration courtesy of the Texas Department of Human Health Services.
West Nile mosquitoes detected in Williamson County
Kaitlyn Wilkes
The Williamson County Cities and Health District has notified the City of Georgetown and Taylor that mosquito trap samples have tested positive for West Nile Virus.
Monday, July 8, 2024
Health District prepares for mosquito season
Nalani Nuylan
One year removed from an active mosquito season with dozens of West Nile virus mosquitoes reported, Williamson County and Cities Health District is informing the public about precautions that could reduce mosquito bites.
Wednesday, May 1, 2024
Williamson County City Health District building located in Round Rock. Photo by Nalani Nuylan.
Health district workers detect West Nile virus mosquito in Bartlett, Georgetown
Kaitlyn Wilkes
A mosquito sample tested positive Tuesday, August 29, for West Nile Virus at Mt. Aratat Community Park in Bartlett. The positive samples were collected from trap sites.
Tuesday, September 5, 2023
Third mosquito trap tests positive for West Nile in Georgetown
Kaitlyn Wilkes
On Thursday, August 10, a mosquito trap on Yellow Rose Trail in Sun City tested positive for the West Nile Virus.
The city is currently evaluating whether or not to spray the area, and a decision will be made early next week.
Friday, August 11, 2023
Williamson County Cities Health District building in Round Rock. Sun Archive.
Two mosquitoes test positive for West Nile in Cedar Park
Nalani Nuylan
In an update from the Williamson County Cities Health District Integrated Vector Management program, two mosquitoes test positive for West Nile Virus in Cedar Park earlier this week.
Thursday, August 3, 2023
Williamson County and Cities Health District building in Round Rock. Photo by Nalani Nuylan.
West Nile virus mosquito detected in Granger
Nalani Nuylan
A sample of mosquitoes was collected near Colorado Street in Granger on July 25 has tested positive for West Nile virus. The positive test was indicated in lab results received on July 27 from the Texas Department of State Health Services lab in Austin.
Monday, July 31, 2023
Jason Fritz, Williamson County City Health District Integrated Vector Management Program lead, assembles a mosquito trap. Photo by Nalani Nuylan.
Williamson County vector program tracking West Nile cases
Nalani Nuylan
Summer is a season of sunny days and family vacations. A time when Texas barbecue junkies show off their brisket recipe in a smoker. Kids spend their days at local pools, and using slip and slides and kiddie pools in the backyard, enjoying the refreshing water.
Friday, July 28, 2023
West Nile mosquito found in Jarrell, seventh case this year
Nalani Nuylan
A mosquito trap tested positive for West Nile virus in Jarrell, Friday July 21. The positive test was confirmed in lab results from the Texas Department of State Health Services lab in Austin.
The positive sample was collected from a trap site near the community pool on Sonterra Boulevard.
Monday, July 24, 2023