First Confirmed Case of West Nile Virus in Yakima County

First confirmed case of West Nile Virus reported in Yakima County Requested Actions Be aware that West Nile Virus (WNV) has been detected in mosquitos in Yakima, Benton, and Franklin counties. Yakima County has reported the first human case of WNV in Washington this year. Be aware of signs and symptoms of WNV infection. Fax … First Confirmed Case of West Nile Virus in Yakima County