Latest data reported to CDC since the start of the Cyclospora season on May 1, 2026.
Learn about the intestinal illness caused by the microscopic parasite Cyclospora.
Find active and previous outbreaks of cyclosporiasis.
CDC monitors cyclosporiasis cases year-round to identify potential outbreaks.
For Healthcare Professionals
Clinical information on the parasite that causes cyclosporiasis, including testing and treatment.
Find care and treatment recommendations.
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U.S. outbreaks have been linked to imported fresh produce.
The most common symptom of cyclosporiasis is watery diarrhea.
Use safe food handling practices to reduce your risk of cyclosporiasis.