Only about 20% of patients infected with the virus develop symptoms, according to Tarrant County Public Health. Serious cases remain rare.

With mosquito season peaking across the Texas Panhandle, health experts are urging the public to take precautions as the risk of West Nile virus increases. The virus was recently confirmed in Randall County after the virus was found in donated blood during screening.

Central Texas' first human West Nile virus case of 2025 reported in Williamson County. Health officials expect more cases because of recent rains and floods.