A Canyon County man has tested positive for the West Nile Virus, marking the first human case in the state this year, Southwest District Health officials said Thursday.
The adult male, who is in his 50s, might have been exposed to the virus while in Adams County. There were a total of 25 reported human cases in 2017, according to the Idaho Department of Health and Welfare’s website.
Eight counties have mosquitoes that have tested positive for West Nile, according to the Idaho Department of Health and Welfare. Those are Adams, Canyon, Elmore, Gem, Gooding, Owyhee, Payette and Power.
A horse also tested positive for the virus in Owyhee County on July 27.
West Nile, which is spread by the infected mosquitoes, doesn’t cause symptoms in most people, but those who do become sick may contract a fever or experience a more severe infection in their brain or spinal cord. People older than 50, and those with weakened immune systems or with other medical conditions, are at greater risk for the neuroinvasive illness.