Wisconsin Health Authorities Respond to Measles Exposure Linked to Travel

The Wisconsin Department of Health Services (DHS), along with St. Croix and Rock County Public Health Departments, is investigating potential measles exposure from an out-of-state traveler. This exposure is separate from previously confirmed cases in Wisconsin. As of August 19, 2025, nine measles cases have been confirmed within the state. Authorities have identified two public locations and specific times where exposure likely occurred, urging those present during these periods to verify their measles/MMR immunization status via the Wisconsin Immunization Registry or through local health providers.

The rising number of measles cases across the U.S. highlights increased travel-related exposures, underpinning the need for maintaining up-to-date vaccinations. Individuals born before 1957 are generally considered immune, while others without laboratory evidence of immunity should receive at least one dose of a measles-containing vaccine; children are recommended to have two doses. The MMR vaccine is widely accessible through doctors, clinics, health departments, and some pharmacies. Insurance coverage varies, but assistance programs like Vaccines for Children and Adults offer support for those without coverage.

Measles symptoms typically appear 10 to 21 days after exposure, with the current exposure window indicating symptom onset between August 14 and 25, 2025. Symptoms include fever, cough, runny nose, red eyes, fatigue, and a characteristic rash. Individuals exhibiting symptoms are advised to avoid public places and notify healthcare providers in advance to minimize virus transmission risks.

This public health response emphasizes compliance with immunization schedules and proactive monitoring in managing measles outbreaks. The DHS continues to update the public through dedicated webpages and coordinates with local health departments to manage the investigation and any necessary interventions. Media inquiries and further information are facilitated through official DHS communication channels.