Health department confirms the first positive human case of West Nile virus in Hays county

The Hays County Health Department has confirmed the first positive human case of West Nile virus in Hays county. The case was identified in the 78610 zip code (Buda) area.

Last week, health officials reported that mosquitoes infected with the West Nile virus were found in traps near Wimberley. Human infections were also confirmed in Montgomery and Williamson counties.

While 80% of people infected with West Nile virus do not experience symptoms, 20% may exhibit symptoms such as fever, headache, body aches, joint pain, vomiting, diarrhea, skin rash, and swollen lymph nodes. Individuals aged 50 and older, and those with compromised immune systems, are at a higher risk for severe symptoms, including stiffness, disorientation, coma, tremors, vision loss, paralysis, and, in rare cases, death. Anyone experiencing these symptoms is urged to seek medical atten- tion. Supportive care is typically provided to improve the quality of life and comfort of diagnosed patients. Symptoms generally last 3-6 days, but fatigue and weakness can persist for weeks or months.

West Nile virus is spread through the bite of an infected mosquito. Mosquitoes become infected when they feed on the blood of birds carrying the virus, and can then transmit the virus to humans and animals. Severe infections can lead to neurologic complications such as encephalitis and meningitis.

Hays County epidemiologist Ian Harris emphasized that West Nile virus is not contagious among humans, stating, “Humans are ‘dead-end hosts’ and cannot transmit the virus to others.”

On July 23, the Texas Department of State Health Services (DSHS) confirmed a second positive mosquito pool in the unincorporated area of the 78666 ZIP code. During the 2023 season, there were no positive West Nile virus mosquito pools in Hays County. Statewide, there were 913 positive mosquito pools reported in 2023, and 1,327 positive pools have been reported as of July 20, 2024.

Public health officials remind residents that the key to preventing West Nile virus is to minimize the number of mosquitoes in areas where people live, work, and play. Recent rains have created ideal breeding conditions for mosquitoes. Officials urge everyone to survey their properties for standing water and to drain any sources where mosquitoes could lay eggs. Even small amounts of standing water, such as in a teaspoon, can serve as a breeding ground.

Hays County health officials recommend practicing the 'Three Ds' of mosquito bite prevention: DEET: Use insect repellents containing DEET or other EPAregistered repellents when outdoors, and 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.

Hays County Development Services is conducting mosquito surveillance to monitor and track mosquito- borne illnesses. For more information, visit txwestnile.org.