A parasitic illness tied to contaminated produce is spreading across 17 states this summer, and physicians are issuing an increasingly urgent warning: most infected patients are never properly diagnosed because routine stool cultures used in most clinical labs do not test for this specific organism.
The Centers for Disease Control and Prevention has confirmed 145 domestically acquired cases of Cyclosporiasis — illness caused by the parasite Cyclospora cayetanensis — in 17 states since May 1, 2026. Twenty of those patients have been hospitalized. No deaths have been reported. But public health officials and independent analysts widely agree that the confirmed count substantially understates the true burden of illness.
