St. Louis encephalitis is rare in Wisconsin and the U.S. Six cases from 1964 to 2018 have been reported in Wisconsin. No major outbreaks have ever been documented. St. Louis encephalitis is preventable.
Below are the statewide data for St. Louis encephalitis. Visit the Centers for Disease Control and Prevention (CDC) St. Louis Encephalitis Statistics and Maps page for national data.
St. Louis Encephalitis Data (2009-2018)
Questions about illnesses spread by mosquitoes? Contact us!
Phone: 608-267-9003 | Fax: 608-261-4976