Staff Report
WIMBERLEY — Hays County Development Services (HCDS) Mosquito Surveillance Program has received confirmation from the Texas Department of State Health Services (DSHS) that a mosquito trap sample collected in the 78676 ZIP code has tested positive for West Nile Virus (WNV). HCDS collected the positive sample from a site in Wimberley Sept. 1.
This is the ninth West Nile Virus-positive mosquito pool collected through the Hays County Mosquito Surveillance Program during the 2026 season. Statewide, DSHS reported 1,273 positive mosquito pools in 2026.
“This positive mosquito pool is an important reminder for Wimberley residents to stay vigilant as we move through the remainder of mosquito season,” Precinct 3 commissioner Morgan Hammer said. “Simple steps like eliminating standing water around your home and using insect repellent when spending time outdoors can make a meaningful difference. I appreciate the continued work of our Development Services team to monitor mosquito activity and keep our communities informed.”
HCDS conducts mosquito surveillance from May through November to monitor mosquito populations and mosquito-borne diseases. HCDS collects mosquitoes using standardized traps and sends them to DSHS for identification and arboviral testing. This surveillance helps HCDS track mosquito activity, identify breeding areas and guide prevention and control efforts.
The best way to prevent WNV is to reduce mosquito populations where people live, work and play. Residents can reduce their risk of mosquito bites and West Nile Virus infection by following the three Ds: Defend, Dress and Drain.
• DEFEND: Whenever outside, use EPA-approved repellents and always follow label instructions.
• DRESS: Wear long, loose and light-colored clothing outside.
• DRAIN: Drain or treat all standing water in and around your home or workplace where mosquitoes could lay eggs.
“Mosquito-borne illness is a shared public health concern and prevention starts with each of us,” Hays County Judge and director of Emergency Management Ruben Becerra said. “We encourage residents throughout Hays County to make the three Ds — Defend, Dress and Drain — part of their routine. By taking a few simple precautions and looking out for one another, we can help reduce the risk of West Nile Virus in our community.”
Infected mosquitoes can transmit West Nile Virus through bites. Eighty percent of infected people have no symptoms, while about 20% may develop fever, headache, body aches, rash or other flu-like symptoms. Adults aged 50 and older and people with weakened immune systems are at higher risk for severe illness. Anyone experiencing these symptoms should seek medical attention. There is currently no treatment for West Nile Virus. For more information on human risk, visit the Hays County Health Department's Epidemiology & Disease Prevention website.
For more information regarding mosquito surveillance, visit the Hays County Development Services website or call (512) 393-2150. Visit the Centers for Disease Control and Prevention website for more information on the West Nile Virus.
