Overview
- Federal surveillance through mid‑June recorded 145 domestically acquired cyclosporiasis cases across 17 states with 20 hospitalizations and no deaths, a baseline that predates recent state reports.
- Southeast Michigan has reported a sudden local surge that topped more than 700 cases and at least 38 hospitalizations by July 7, far exceeding the state’s usual annual total.
- CDC, FDA and state health teams are conducting patient interviews, specialized stool testing and supply‑chain tracebacks but have not identified a single food, grower or supplier linking all clusters.
- Public guidance urges thorough washing of produce, avoiding prewashed bagged salads when feasible, cooking high‑risk items, and seeking testing and treatment with trimethoprim‑sulfamethoxazole for symptomatic patients.
- Cyclospora is spread when food or water is contaminated with human feces and must mature in the environment before it becomes infectious which makes direct person‑to‑person spread unlikely and helps explain why cases are often linked to contaminated produce and undercounted without targeted testing.