Overview
- Salt Lake City Mosquito Abatement District reported roughly 35% of tested mosquitoes positive for West Nile virus and Salt Lake County has two confirmed human cases.
- Utah has recorded 709 positive mosquito samples this year compared with 108 in 2025 and 92 in 2024, prompting health officials to warn of a much higher local transmission risk.
- Brazoria County officials said a Manvel trap tested positive and crews will treat the area twice nightly for three nights with retesting planned next week.
- Hays County, Texas confirmed its first human West Nile case after eight trap detections this season, and local leaders urged residents to use repellents, drain standing water, and wear long clothing.
- Public-health officials say targeted trapping, pooled testing and localized spraying can cut transmission locally but stress that most infections are mild and older adults or immunocompromised people face the greatest risk of severe disease.