Texas health officials are sounding an early alarm this mosquito season. The Texas Department of State Health Services (DSHS) has confirmed the state's first human case of West Nile virus for 2026 — and it's a severe one. The infected resident lives in Harris County, home to the city of Houston, the fourth-largest city in the United States. What makes this case especially concerning is its classification as West Nile neuroinvasive disease, the most dangerous and rare form of the infection.
Unlike the more common West Nile fever, which produces flu-like symptoms, neuroinvasive disease attacks the central nervous system, causing tremors, convulsions, neck stiffness, disorientation, and in serious cases, lasting paralysis or death. Health officials stress that while fewer than 1% of those infected ever reach this stage, the severity demands immediate attention, particularly in a dense urban environment like Greater Houston.
