The U.S. Food and Drug Administration is identifying shredded iceberg lettuce from Taylor Farms as the primary source of a cyclospora outbreak [1].
This investigation is critical because cyclospora is a parasite that causes gastrointestinal illness, necessitating the removal of contaminated produce from the food supply to prevent further infections.
Agency officials said that laboratory evidence is converging on the supplier's shredded iceberg lettuce as the likely origin of the illnesses [1]. The FDA is continuing its focus on Taylor Farms even after a specific laboratory result was deemed a false positive [2]. This false-positive sample originated from lettuce in Mexico [5].
Despite the ruling that the specific test result was a false alarm, the FDA has not lifted the recall on the affected products [6]. The agency continues to monitor the distribution chain to ensure the contaminated lettuce is removed from retail, and food service locations.
"Evidence is starting to “converge” on the same primary suspect: shredded iceberg lettuce from Taylor Farms," the Acting Deputy Commissioner for Food at the FDA said [1].
Federal investigators are working to determine how the parasite entered the supply chain. The agency is emphasizing that the overall data continues to support the conclusion that Taylor Farms' lettuce is the source of the outbreak, regardless of the single inaccurate test result [3].
“Evidence is starting to “converge” on the same primary suspect: shredded iceberg lettuce from Taylor Farms.”
The FDA's decision to maintain a recall despite a false-positive lab result indicates that the agency is relying on epidemiological data—such as patient interviews and consumption patterns—rather than a single laboratory sample. By keeping the recall active, the FDA is prioritizing public safety over the technical accuracy of one test, suggesting a high level of confidence that the contamination exists elsewhere in the Taylor Farms supply chain.
