Eight human infections of the West Nile virus have been recorded in Idaho as of Wednesday, Sept. 5, according to officials from the Idaho Department of Health and Welfare.
In addition, five other reports of infection are under investigation. The illness is spread by infected mosquitoes and is not spread between humans by casual contact.
Symptoms include fever, headache, nausea, vomiting and swollen lymph nodes.
The Department of Health and Welfare said the number of human cases of West Nile virus in Idaho and across the nation are increasing, which concerns public health officials. They urge resident to reduce the chances of infection by applying mosquito repellant containing DEET, Picaridin or Lemon Eucalyptus, and cover up exposed skin when outdoors.
Cases include two people in Twin Falls County, two in Elmore County, two in Gem County, one in Payette County and one in Washington County. Additionally, five horses in Owyhee, Washington, Canyon and Gooding counties have tested positive for West Nile.
Ten Idaho counties in total have found evidence of the West Nile virus.