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
Get clinical information on cyclosporiasis, including testing and treatment.
Find care and treatment recommendations.
Guidance for diagnosing cyclosporiasis, including when and how to test for Cyclospora.
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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.