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.
Information on the current multistate outbreak of Cyclospora in the United States.
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.
Trimethoprim-sulfamethoxazole (TMP-SMX) is the treatment of choice for cyclosporiasis.
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The most common symptom of Cyclospora infection is watery diarrhea.
Use safe food handling practices.