Since June 22, 2026, more than 170 cases of cyclosporiasis have been reported in southeast Michigan — up from 150 several days prior.

Cyclosporiasis, a nasty parasitic infection that causes “explosive” watery diarrhea, has sickened dozens of people in Michigan and other parts of the United States.

The Michigan Department of Health and Human Services reported that, as of June 30, there were more than 170 reported infections.