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Three Las Vegas area ZIP codes report West Nile virus-positive mosquitoes
Las Vegas Sun • • health
Key Points:
- The Southern Nevada Health District detected the first mosquitoes testing positive for West Nile virus in Clark County this season, with positive results in three ZIP codes: 89121, 89169, and 89139.
- Routine mosquito surveillance began earlier than usual in March due to warmer temperatures and above-normal rainfall, prompting increased trapping and testing efforts in affected areas.
- The Health District reminded residents to protect themselves from mosquito bites by using insect repellent, eliminating standing water, and wearing protective clothing, especially after recent rainfall increased mosquito breeding sites.
- This mosquito detection follows the first human West Nile virus case in Clark County in 2026, involving a woman who contracted the neuroinvasive form but has since recovered.
- Officials also continue monitoring the invasive Aedes aegypti mosquito, capable of transmitting multiple diseases, which tested positive for West Nile virus in 2024 in Clark County.
