Michigan health officials are recommending that infants as young as 6 to 11 months old receive an accelerated measles vaccine dose due to possible community transmission of the highly contagious virus. Eight measles cases have been confirmed in Washtenaw and Monroe counties, with health experts concerned that the virus may be spreading beyond the initial outbreak area .

Why Is Measles Spreading Now in Michigan?

Measles is one of the most contagious diseases known, spreading through direct person-to-person contact and through the air. What makes this outbreak particularly concerning is that infected people can transmit the virus before they even show symptoms, meaning someone could unknowingly spread measles for days. Seven cases were initially identified in Washtenaw County, and when an eighth case appeared in neighboring Monroe County, health officials became worried that community transmission was occurring beyond the original cluster .

"Measles is incredibly transmissible and we are now seeing possible spread outside the initial outbreak in Washtenaw County. Because people with measles can transmit the virus before they experience symptoms, we want to make sure we are protecting the most vulnerable members of our communities by recommending early vaccination for infants ages 6 through 11 months," said Dr. Natasha Bagdasarian, Chief Medical Executive at the Michigan Department of Health and Human Services.

Dr. Natasha Bagdasarian, Chief Medical Executive, Michigan Department of Health and Human Services

What Are the New Vaccination Recommendations?

Normally, the MMR (measles, mumps and rubella) vaccine is given to children at 12 to 15 months of age, with a second dose administered at least 28 days later. However, due to the current outbreak, the Michigan Department of Health and Human Services is now recommending that infants ages 6 to 11 months receive an accelerated first dose if they live in or travel to affected areas .

The recommendation applies to residents of seven counties: Washtenaw, Monroe, Wayne, Oakland, Jackson, Livingston, and Lenawee. This accelerated recommendation is in effect through May 16, 2026, which represents two incubation periods after the infectious period of the last identified measles case. Infants who receive an early dose will still need two additional MMR doses after 12 months of age to complete the full series .

How to Protect Your Family From Measles

• Get vaccinated immediately: All individuals in Michigan without evidence of measles immunity should receive the MMR vaccine as soon as possible. Two doses of the vaccine offer 97% protection against measles.
• Check your vaccination history: If you were vaccinated between 1963 and 1967, you may have received a less-effective version of the vaccine. If you received only one dose before 1989, you may be eligible for a second dose. Contact your healthcare provider or local pharmacy to verify your immunity status.
• Know the symptoms: Measles symptoms typically appear 7 to 14 days after exposure, though they can take up to 21 days. Watch for high fever (potentially exceeding 104 degrees Fahrenheit), cough, runny nose, red and watery eyes, tiny white spots inside the mouth, and a rash that starts on the face and spreads downward.
• Seek care safely: If you think you've been exposed to measles or develop symptoms, call your healthcare provider before seeking testing or treatment. This prevents exposing others in waiting rooms and medical facilities.

Vaccines are widely available at doctor's offices, most pharmacies, and local health departments throughout Michigan. Children who qualify for the Vaccines for Children program can receive no-cost vaccination at enrolled providers .

The timing of this outbreak highlights why preventive vaccination remains one of the most effective tools in public health. Measles can cause serious complications, particularly in very young children, making early protection crucial during periods of community transmission .