Overview

• An unincorporated Harris County resident tested positive for West Nile virus, marking the county’s first human case of 2025, and has fully recovered.
• The City of Baytown reported its first case of the year, prompting targeted mosquito control measures within city limits.
• Harris County Public Health identified infected mosquitoes near Cypress Park, Tomball and Humble, triggering heightened vector surveillance and spraying.
• Mosquito control teams in both Harris County and Baytown are maintaining regular spraying schedules and urging residents to report standing water and potential breeding grounds.
• Officials recommend using DEET insect repellent, wearing long sleeves and avoiding outdoor activity during dawn and dusk to reduce exposure.