Overview
- Federal officials have recorded about 4,173 laboratory-confirmed cyclosporiasis cases and say more than 7,400 additional reported illnesses are under review as investigations continue.
- Michigan has reported the largest burden with over 7,000 cases and about 100 hospitalizations, putting local hospitals and public health teams under strain.
- Traceback and epidemiologic interviews have pointed investigators to shredded iceberg lettuce supplied by Taylor Farms de Mexico, and the company issued a voluntary recall of central Mexico iceberg lettuce on July 17.
- The FDA retracted an initial positive Cyclospora test on a border lettuce sample as a false positive and says it has no confirmed positive product tests, but officials stress that epidemiology and supply-chain records still drive the ongoing source attribution.
- Cyclospora is hard to detect and trace because it cannot be easily cultured and lacks fast genome tools, which explains why public health teams rely on patient interviews and traceback and why perishable produce is often gone before testing can confirm contamination.