BOISE, Idaho (AP) -- Mosquitoes carrying the West Nile virus have been found in the last week in northern and southern Idaho.
Authorities in Ada and Boundary counties both found mosquitoes that tested positive for the virus.
In 2006, Idaho led the nation in West Nile illnesses with almost 1,000 human infections, which contributed to 23 deaths. In 2013, 40 human cases were reported in 16 counties, with two deaths.
West Nile is usually contracted from the bite of an infected mosquito. It is not spread from person-to-person through casual contact.
Symptoms of infection often include fever, headache, body aches, nausea, vomiting, and sometimes swollen lymph glands or a skin rash on the chest, stomach, and back.