Michigan cyclosporiasis outbreak July 2026
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Cyclospora outbreak linked to iceberg lettuce expands to more states
There is no evidence of locally acquired infection or ongoing community transmission in Hawaii.
Cyclosporiasis is an intestinal illness caused by the microscopic parasite Cyclospora cayetanensis.
The Hawaii Department of Health confirmed two additional cases of cyclosporiasis in Hawaii residents who became infected while traveling outside the state.
Cyclosporiasis outbreak in Michigan grows to nearly 700 cases
Ingham and Jackson Counties have a combined 57 cases.
Cyclosporiasis is caused by infection with the parasite Cyclospora cayatenensis.
The leading theory is that the infection is linked to contaminated fresh produce, though a specific source has not been identified.
Nearly 600 Cyclosporiasis cases reported in Michigan around Fourth of July
Per the MDHHS, previous outbreaks of Cyclosporiasis have been linked to foods including bagged salad mixes and kits, fresh cilantro, fresh basil, raspberries, snow peas, and green onions.
Cyclosporiasis cases are still the highest in Monroe, Lenawee, Washtenaw, Wayne, Shiawassee, Jackson, Oakland and Livingston counties.
Symptoms of cyclospora infection occur anywhere from 2 to 12 days after exposure.