Health Officials Investigate Measles Case Linked to Travel Through Milwaukee Mitchell Airport
Milwaukee, WI – March 10, 2026 – State and city health officials are investigating a measles case tied to travel through Milwaukee Mitchell International Airport.
State and local health officials are investigating a confirmed case of measles in a person who traveled through Milwaukee Mitchell International Airport before arriving in Walworth County.
The Wisconsin Department of Health Services said March 9 that it is working with the City of Milwaukee Health Department and Walworth County health officials to review the case and identify potential exposure locations. The individual’s infection is linked to travel, according to the state.
Airport Travel Tied to Case
Health officials confirmed that the person passed through Milwaukee Mitchell International Airport while infectious. Agencies are reviewing travel timelines and notifying the public if any exposure sites require broader community awareness.
Measles spreads through the air when an infected person coughs or sneezes and can remain in the air for up to two hours after the person leaves an area. Public health officials are assessing whether additional exposures occurred in Milwaukee County connected to the travel route.
Coordination Across Agencies
The investigation involves coordination between state and local health departments. Officials are reviewing vaccination records of close contacts and monitoring for any additional cases.
This case follows other measles activity reported in Wisconsin earlier this year. Health authorities have emphasized the importance of verifying measles, mumps and rubella vaccination status, particularly for individuals who may not have documentation of prior doses.
What Residents Should Know
Public health officials advise residents to check their immunization records and be aware of any notices about specific exposure locations. Anyone who believes they may have been exposed is encouraged to follow guidance from local health authorities and contact a healthcare provider before seeking in-person care if symptoms develop.
The City of Milwaukee Health Department continues to share updates through its website and public alerts as more information becomes available.
If you have urgent symptoms, seek medical care. For general questions, talk with a licensed clinician.
