Measles Outbreak Confirmed in Southwestern Wisconsin
Health officials in Wisconsin are investigating a measles outbreak in the southwestern part of the state, with 15 confirmed cases in Iowa and Lafayette counties. The majority of those infected are unvaccinated individuals, indicating local transmission of the highly contagious…

Milwaukee, WI, August 13, 2026 —
Health officials in Wisconsin are currently investigating a measles outbreak that has been identified in the southwestern region of the state. The outbreak has resulted in 15 confirmed cases of the measles virus across Iowa and Lafayette counties.
According to preliminary information, the majority of individuals who have contracted measles in this outbreak are unvaccinated. This suggests that the virus is undergoing local transmission within the affected communities. Measles is a highly contagious disease that can spread rapidly through the air when an infected person coughs or sneezes.
Public health authorities are actively working to monitor the situation, identify additional cases, and implement measures to control the spread of the virus. Further details regarding the timeline of the outbreak and specific public health recommendations are expected to be released as the investigation progresses.
Story summarized from the original created by Danielle Kaeding, Wisconsin Public Radio on urbanmilwaukee.com, see more information here.
Media gallery
