Overview
- Taylor Farms voluntarily removed shredded iceberg lettuce from the market and stopped shipments from its Central Mexico plant on July 17 after federal and state tracebacks connected the product to illnesses at some Taco Bell locations.
- Investigators have relied on patient interviews and supply‑chain traceback to associate a major Cyclospora cluster with shredded iceberg lettuce from Taylor Farms de Mexico because routine testing for Cyclospora on produce is often insensitive.
- An FDA lab result that initially suggested Cyclospora on a lettuce sample was reclassified as a false positive on July 19, which left no sustained product-level confirmation but did not change the agencies’ epidemiology-driven findings.
- The FDA began an on-site inspection and sample collection at the Guanajuato plant on Aug. 13 as officials work to find environmental or processing evidence to support the traceback data.
- The outbreak has sickened thousands, strained state public-health resources—especially in Michigan—disrupted restaurant and retail supply chains, and prompted experts to call for faster federal outbreak response capacity while fact-checkers and officials have disputed claims that past corporate donations influenced the response.