West Nile virus detected in Grant County, officials urge community to take caution

Key Points:

• West Nile virus has been detected in mosquitoes in the Moses Lake area of Grant County, Washington, confirmed on June 29, 2026, prompting health officials to urge residents to take precautions against mosquito bites.
• Neighboring counties Benton and Yakima have also reported West Nile virus activity in mosquitoes and birds, though no human or domestic animal infections have been reported in Washington so far in 2026.
• Health officials advise reducing mosquito breeding sites by eliminating standing water, ensuring window and door screens are intact, and using EPA-registered repellents containing DEET, Picaridin, or oil of lemon eucalyptus.
• People over 60 and those with certain medical conditions are at higher risk of severe illness, which can include encephalitis or meningitis; residents should seek medical attention if symptoms develop after mosquito exposure.
• Grant County Mosquito Control District No. 1 is actively conducting mosquito control efforts through October 2026, including trapping and testing mosquitoes to limit the spread of the virus.