• Measles is a virus that is very contagious. It spreads through coughing, sneezing, and breathing the same air as a person with measles.
• Measles symptoms can lead to hospital visits and cause serious health problems like pneumonia, miscarriage, and brain swelling-which may result in blindness, deafness, or even death.
• Measles can be serious, especially for children under age 5, pregnant women, and people with weakened immune systems.

• Data since 8/1/2025 and last updated 8/27/2025
• Number of cases: 0
• Number of hospitalizations: 0
• Number of deaths: 0

Other data sources: Statewide Data  |  National Data

 What are the symptoms of measles?

• Day 0: Exposed to measles.
• Days 7-12: Symptoms begin; fever, cough, runny nose, red/watery eyes.
• Days 10-21: Rash starts on face, spreads to the body (usually 3-5 days after fever begins)
• You are contagious 4 days before and 4 days after the rash appears.

How do you protect yourself?

• Vaccination is the best way to protect yourself from measles. Two doses of the measles, mumps, and rubella (MMR) vaccine is 97% effective at protecting against measles. For more information on the MMR vaccine, you can visit the Centers for Disease Control and Prevention (CDC) website.
• You can check which vaccines you have received in Wisconsin by using the Wisconsin Immunization Registry (WIR) or by asking your doctor.
  • Vaccines received before 1990 may not be in WIR and those received outside of Wisconsin are not in WIR unless your doctor added them.
• Minimize exposure: Stay aware of confirmed measles cases so you can choose where to go to limit your risk. Avoid public places where measles cases may be present.

You were exposed if you were in the same room or area as someone with measles - at the same time or within 2 hours after they left.

• Isolate immediately. This means:
  • Staying home and not going to work, school, church, shopping, or other public places.
  • Avoiding visitors, including friends and family who do not live with you.
• Contact your doctor.
  • Call your doctor before going to a clinic. If you need a hospital, let the hospital staff know right away you might have measles.

You can contact your doctor’s office or the Marathon County Health Department at 715-261-1900.

• State of Wisconsin Department of Health Services
• Centers for Disease Control and Prevention
• Current Measles Data in the United States