Michigan Says Diarrhea Outbreak May be Linked to Lettuce

A cyclospora outbreak linked to a suspected food source has surpassed 3,000 reported cases in Michigan and Ohio, with investigators identifying lettuce or salad greens as an early exposure signal while emphasizing that no specific product or supplier has been confirmed.

Michigan has reported 2,640 cases, including 44 hospitalizations, while Ohio has identified 361 cases and at least 46 hospitalizations; the CDC also reports increased activity across multiple states compared with the same period in 2025.

The prolonged incubation period, complex food distribution networks, and diagnostic challenges have complicated source identification. Read more from CNN here.