India, July 2 -- Michigan health officials are investigating an unusually large outbreak of cyclosporiasis after 174 cases were reported across southern Michigan between June 22 and June 30, 2026. The illness is caused by the parasite Cyclospora cayetanensis and can lead to stomach-related symptoms, including severe diarrhea.

According to the Michigan Department of Health and Human Services (MDHHS), the number of infections reported in little more than a week is far higher than what the state normally sees in an entire year. Officials have not yet identified the source of the outbreak but expect more cases to be reported as the investigation continues.

The outbreak has been concentrated in several southern Michigan counties, with Monroe...