Macomb County health officials on Thursday confirmed a measles case. It is the first 2026 case in the county, according to the Macomb County Health Department.
Officials did not list any public exposure sites, though they are working to notify individuals who may have been exposed.
No other details about the case were released.
"Measles is extremely contagious and spreads through the air when an infected person coughs, sneezes, or even speaks," said Andrew Cox, director and health officer of Macomb County Health and Community Services. "The best protection against measles is vaccination. If you’re not yet vaccinated, get your shot as soon as possible to safeguard yourself, your family, and your community from this preventable disease."
The case comes amid a measles outbreak in Washtenaw County. Cases have also been reported in Monroe County, bringing Michigan's total 2026 count to eight.
Symptoms of measles usually begin within seven to 14 days after exposure and can appear up to 21 days after exposure. They include a high fever, cough, runny nose, red and watery eyes, tiny white spots on the inner cheeks and rashes, officials said.
If symptoms develop, residents are urged to not visit their doctor or emergency room unless they have called ahead so facilities can take precautions to prevent exposure to other people.
Health officials said a single dose of the MMR vaccine is roughly 93 percent effective at preventing measles; two doses are about 97 percent effective. The vaccine is also effective if given within 72 hours of exposure to help prevent illness.
According to the CDC, 91.6 percent of Michiganders in 2025 were vaccinated against measles, down from 92.1 percent the previous year.
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