Michigan says diarrhea outbreak may be linked to lettuce, salad greens as cases rise above 3,000 | CNN

An outbreak of diarrhea caused by the parasite cyclospora has risen to more than 3,000 cases in Michigan and Ohio, and the ongoing investigation suggests lettuce or salad greens may be the source. However, Michigan health officials said other foods can’t be ruled out and no specific type, grower or supplier has been identified as the source. “Early information has shown lettuce as a common product that regularly comes up during the investigation,” Dr. Natasha Bagdasarian, Michigan’s chief medical executive, said in a statement Monday. The state said its investigation is ongoing. Michigan reported 2,640 cases as of 9:30 a.m. Monday, including 44 hospitalizations. Ohio has reported 361 cases since June 1. At least 46 people have been hospitalized. As of July 10, 31 states have reported cases to the US Centers for Disease Control and Prevention, although it’s not clear whether they’re all part of the same outbreak. The CDC says “multiple states” have reported an increase in cases in the last two weeks compared with the same period in 2025. The agency said Friday that its national count — 843 confirmed cases since May 1 — is lower than states’ counts while cases u