MADISON, Wis. — Wisconsin health officials have confirmed the state's first case of West Nile virus in a human this year.
They say the virus was diagnosed in a Dane County resident. Last year, 57 cases of West Nile virus infection were reported among Wisconsin residents. That's the highest annual number of reported cases since surveillance of the disease began in Wisconsin.
Health officials say 10 dead birds from around the state have tested positive for the virus this season, too.
They say most people infected with the virus won't have any symptoms. People who do become sick may suffer from a fever, headache, rash, muscle and joint aches, nausea, vomiting and fatigue that can last several days.
Symptoms may begin three to 15 days after a bit from an infected mosquito.