Michigan cyclosporiasis outbreak exceeds 10,000

Michigan health officials announced on Wednesday, July 29, 2026, that the state's cyclosporiasis outbreak has surpassed 10,000 reported cases, solidifying its position as the epicenter of a major multistate foodborne illness event. The Michigan Department of Health and Human Services reported a single-day increase of 397 cases, bringing the total to 10,077. The outbreak has now affected 70 of the state's 82 counties and resulted in 160 hospitalizations, though no deaths have been reported.

The scale of the outbreak is unprecedented for Michigan, which typically sees only about 50 cases of the parasitic illness annually. The severe gastrointestinal disease, caused by the Cyclospora parasite, is characterized by watery diarrhea, stomach cramps, and fatigue. Officials noted that emergency room visits for diarrheal complaints are beginning to slow, but the cumulative case count continues to climb.

Federal investigators have linked a portion of the nationwide outbreak to shredded iceberg lettuce sourced from central Mexico by Taylor Farms de Mexico, which initiated a voluntary recall on July 17. The Centers for Disease Control and Prevention and the Food and Drug Administration have...