Laboratory-confirmed cases of cyclosporiasis, a foodborne parasitic infection, have climbed to 6,707 across 45 states since May 1, according to CDC data cited by USA TODAY.
The CDC’s July 28 update represented an increase of more than 2,500 confirmed cases from the previous week. The agency also knew of more than 11,500 additional reports, primarily in Michigan and Ohio, that had not yet been confirmed by laboratory testing. There had been 423 hospitalizations and no reported deaths.
Federal and state officials are investigating multiple possible outbreaks. The largest cluster is centered in Michigan. Michigan officials reported more than 10,000 cases, but state and federal totals differ because reports must be verified and transmitted before appearing in CDC counts.
Officials have investigated iceberg lettuce grown in central Mexico as a possible source of the largest outbreak. Taylor Farms initiated a recall July 17, according to USA TODAY and Associated Press reporting. The investigation does not mean every case is linked to one source.
Cyclospora cayetanensis can cause prolonged diarrhea, nausea, vomiting, stomach cramps, fatigue and other gastrointestinal symptoms. It is usually spread through contaminated food or water. The CDC says the true number of illnesses is likely higher because some people recover without medical care or testing.
People with persistent or severe diarrhea, dehydration or symptoms after eating recalled food should contact a health professional and follow local public-health guidance.
Sources: USA TODAY, July 29, 2026; CDC surveillance; Associated Press reporting.
