Overview
- The Centers for Disease Control and Prevention said on Tuesday that 1,645 Cyclospora cases have been confirmed since May 1 and that more than 5,100 additional reports are under investigation.
- Michigan reports the largest cluster, with state officials saying they have interviewed more than 1,000 patients and that leafy salad greens frequently appear in exposure histories, though no specific product, producer or supplier has been identified.
- Public-health investigators from the CDC and FDA are running multiple traceback probes across states, a process complicated by delayed symptom onset, gaps in routine testing and limited genetic tools for linking Cyclospora to food.
- Media reports say a national fast-food chain is part of at least one probe and the company has voluntarily removed some fresh ingredients in affected areas, but health authorities have not confirmed any causal link and no national recall has been issued.
- Health officials urge people with persistent watery diarrhea to seek testing and treatment, advise careful handling or cooking of fresh produce, and warn that case counts will likely rise as more tests and reports are completed.