Michigan is in the middle of the largest outbreak of a diarrheal illness in the state’s history, and health officials still haven’t been able to pin down exactly where it’s coming from. As of this week, more than 1,200 people in the state have been sickened, with dozens hospitalized — and the outbreak isn’t staying within state lines. Here’s what’s actually known, why it’s proving so hard to trace, and what health officials are recommending in the meantime.
Key Takeaways
- Michigan has confirmed 1,251 Cyclospora cases as of July 9 — its largest outbreak on record — with 36 hospitalizations reported as of July 8.
- Ohio has 177 confirmed cases as of July 2, and investigations are open in 28 other states.
- Investigators haven’t been able to trace the source yet, since Cyclospora is difficult to test for and the incubation period can run one to two weeks.
- Officials currently recommend buying whole heads of lettuce instead of pre-washed bagged salad and cooking leafy greens when possible.
- Cyclosporiasis is treated with antibiotics — see a doctor if diarrhea persists for an extended period rather than waiting it out.
The Numbers Behind the Outbreak
As of July 9, Michigan’s Department of Health and Human Services had confirmed 1,251 cyclosporiasis cases statewide since the outbreak began on June 22 — up from 992 just a day earlier, showing how quickly the count keeps climbing. As of July 8, 36 hospitalizations had been linked to the illness. In a typical year, Michigan sees roughly 50 cases total, making this the largest outbreak of its kind in the state’s history. Those diagnosed range in age from 8 to 84, with a median age of 41, and no deaths have been reported.
The outbreak isn’t confined to Michigan. Neighboring Ohio has its own confirmed cases — reported at 177 as of July 2 — and investigations into similar illness are currently underway in 28 other states.