Nevada Detects West Nile Mosquitoes in 3 Las Vegas ZIP Codes After Early Surveillance
Updated
Updated · Fox 5 Las Vegas · Jun 24
Nevada Detects West Nile Mosquitoes in 3 Las Vegas ZIP Codes After Early Surveillance
3 articles · Updated · Fox 5 Las Vegas · Jun 24
Summary
West Nile-positive mosquitoes were found in Clark County’s 89121 ZIP code and later in 89169 and 89139, marking Southern Nevada’s first infected mosquito detections of the 2026 season.
March surveillance started about a month early because warmer-than-average temperatures and rainfall raised mosquito risk, and the health district will expand trapping and testing around the positive sites.
Officials urged residents to use EPA-registered repellent, remove standing water and wear protective clothing as West Nile can cause fever, aches and, in rare cases, serious neurological illness.
Clark County reported 26 human West Nile cases in 2024 and none in 2025; earlier this month, it logged its first 2026 human case in a traveler who was also in the county during incubation.