Dr. Marc Siegel has highlighted the concerning rise of cyclosporiasis cases, with over 4,000 instances reported across 41 states, linked to contaminated produce.
He stresses the continued need for caution as the parasitic infection remains uncontrolled, despite the FDA’s tracing efforts. He also critiques the FDA panel’s suggestion to relax peptide restrictions, citing inadequate human studies on long-term health impacts. Two fatalities in Michigan are linked to their cyclosporiasis outbreak, which typically presents as an intestinal illness.
The Michigan Department of Health and Human Services (MDHHS) announced the deaths amidst an outbreak affecting 11,234 people statewide. As of last Thursday, 193 were hospitalized for the infection. Medical records indicated that both victims had significant underlying health conditions, possibly worsened by cyclosporiasis and dehydration. The department has not disclosed more details on the cases.
Health officials are investigating the outbreak’s source, with current evidence pointing towards lettuce or salad greens. However, no specific produce, grower, or supplier has been confirmed. Taco Bell has addressed this by promoting lettuce-free menu items, following links between the outbreak and shredded lettuce at its locations.
Cyclosporiasis is caused by the Cyclospora cayetanensis parasite, leading to severe symptoms such as watery diarrhea, abdominal cramping, bloating, nausea, fatigue, and weight loss. The CDC notes the diarrhea is often “explosive” and may persist for weeks without treatment.
While serious, health officials assure that cyclosporiasis isn’t generally life-threatening in the United States, with related deaths being rare.

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