The Oakland County Health Department announced at a news conference Friday afternoon that they have confirmed a case of measles in an adult in that county.

OAKLAND COUNTY, MI — The first case of measles in Michigan in 2025 has been confirmed in Oakland County. Health officials say the measles case was detected in an Oakland County adult who recently returned from international travel, CBS News Detroit reports. The individual’s vaccination status is unknown.

One measles case has been confirmed in Michigan already, but officials in northern Michigan say low vaccination rates in some counties are causing real concern for a potential outbreak.