FDA Maintains Focus on Taylor Farms in Parasite Outbreak

Federal health officials maintain their focus on lettuce from Taylor Farms as the source of a multistate outbreak of a diarrhea-causing parasite. This decision persists despite incorrect test results publicized earlier. A laboratory test erroneously showed a positive result for cyclospora in lettuce from Taylor Farms. The Food and Drug Administration (FDA) reported this finding but later stated it was a false positive.

Authorities have investigated the increase in parasite cases, initially linking them to lettuce served at several Taco Bell locations across five states. Taylor Farms responded by recalling 25 products including shredded lettuce and salad mixes sold under eight brand codes. These products reach a vast number of U.S. food chains and suppliers.

FDA Investigation and Response

Donald Prater, the FDA’s acting food chief, confirmed that the investigation aligns the outbreak data with shredded iceberg lettuce from Taylor Farms’ Mexican operations. The FDA has begun testing produce imports at the U.S. border to further address the situation.

The false positive result derived from a rapid screening test for cyclospora. This test indicated contamination in a Taylor Farms sample not included in the recall. The FDA reported it to the public, but quality checks later revealed the result was incorrect. Taylor Farms announced the updated findings on social media, attributing an apology to the FDA, which agency officials deny occurred.

Understanding Cyclospora

Cyclospora is a microscopic parasite found in food contaminated by human feces. It often results from produce irrigated or washed with tainted water. Ingestion leads to severe intestinal illness with symptoms like frequent bowel movements. In 2026, at least 1,645 cases and 141 hospitalizations due to cyclospora were reported in the U.S.

The FDA and CDC examine five illness clusters, including the one associated with Taylor Farms. Kyle Diamantas, the FDA’s acting commissioner, stressed the necessity of halting the circulation of contaminated products given new cases were reported as recently as the previous week.

Impact on the Food Industry

Recent data from Placer.ai shows a decline in foot traffic at various dining chains due to the outbreak. Taco Bell saw the largest drop, with an 18.9% decline following the announcement. Other chains like Chopt, Chipotle, and Panera Bread also experienced decreases, while Cava had a smaller reduction in traffic.

Investigators face challenges linking specific produce to foodborne illness outbreaks. Standard food poisoning tests aren’t tailored for cyclospora, and lab cultivation of the parasite is not feasible. Officials rely on consumption patterns and case proximity to identify sources.

Support and funding for health and science coverage come from organizations including the Howard Hughes Medical Institute’s Department of Science Education and the Robert Wood Johnson Foundation. The Associated Press remains solely responsible for all content.