Grant County Detects West Nile in 1 Mosquito Sample, Urges Summer Precautions
Updated
Updated · KOMO News · Jun 30
Grant County Detects West Nile in 1 Mosquito Sample, Urges Summer Precautions
3 articles · Updated · KOMO News · Jun 30
Summary
Mosquitoes collected near Moses Lake on June 23 tested positive for West Nile virus, with Grant County confirming the result on June 29 and warning infected mosquitoes may be present beyond the initial area.
No human or domestic-animal infections have been reported in Washington in 2026, but officials said summer-to-fall mosquito season raises spread risk and severe illness can strike about 1 in 150 infected people.
Grant County health officials urged residents to cut standing water, repair window and door screens, avoid dawn and dusk exposure when possible, and use EPA-registered repellents such as DEET or picaridin.
Neighboring Benton and Yakima counties have already reported West Nile activity this month, while Grant County's last human case was in 2015.
Grant County Mosquito Control District No. 1 has run control efforts since March and will continue through October after setting 787 adult traps and testing 62 mosquito samples this season.