The Michigan Department of Health and Human Services (MDHHS) recently reported an imported measles infection, which involves a child in Oakland County.
The MDHHS said it is working closely with Oakland County health officials, and investigators don't think there were additional exposures outside the child's household, based on when symptoms began. Officials urged unvaccinated people ages 1 and older to receive the measles, mumps, and rubella (MMR) vaccine.
Michigan's case is its first since 2019 and is part of a flurry of cases reported in multiple states since the first of the year, most of them imported. In January, the Centers for Disease Control and Prevention (CDC) urged healthcare providers to be alert for cases, owing to a rise in global activity and gaps in vaccination.
Measles is very contagious, and unvaccinated people who are exposed to the virus are thought to have a 90% risk of contracting it. The virus can persist in airspace for up to 2 hours after an infected person leaves the area. In some instances, the disease can lead to serious complications, including brain swelling.
More cases in Florida, Ohio
In other US measles developments, two more cases have been reported in Florida's Broward County, though it's not clear if they are connected to an outbreak at an elementary school. According to state data, eight cases have now been reported in Broward County. Earlier reports noted that the elementary school cluster involved six cases.
The Florida Department of Health (Florida Health) said in a February 23 notice to healthcare providers that, along with Broward County cases, a travel-related case has been reported in central Florida. Florida data suggest that case may be in Polk County.
Meanwhile, a second case has been reported in Ohio's Miami County and has links to the first Ohio case, according to a local media report that cited Miami County Public Health.