Federal health officials have identified Taylor Farms lettuce as the source of a cyclospora parasite outbreak affecting multiple states. Despite some inaccuracies in initial test results, efforts remain concentrated on this particular lettuce.
FDA announced that a lab test incorrectly detected cyclospora in a Taylor Farms lettuce sample. Initially shared on their website, the result was confirmed as a false positive after further examination.
Both federal and state authorities continue to explore the outbreak, initially linked to five states where lettuce was consumed at Taco Bell locations. Taylor Farms recalled 25 lettuce and salad mix products as a precaution.
“FDA’s traceback investigation and the outbreak data continue to converge on shredded iceberg lettuce from Taylor Farms’ locations in central Mexico,” stated Donald Prater, the acting food chief. Additional testing is underway on produce crossing the U.S. border.
The false positive came from a rapid test screening for cyclospora traces in lettuce not involved in the recall. The FDA promptly reported the error after quality checks, notifying Taylor Farms, which shared the news online.
Cyclospora is a parasite contaminating food through fecal contact, often via irrigation or washing with contaminated water. Infection leads to severe intestinal illness, according to the CDC. In 2026, 1,645 people in the U.S. were affected, with 141 needing hospitalization.
Five clusters of illnesses are being investigated, with ongoing reports indicating recent cases. Acting Commissioner Kyle Diamantas emphasized the need for action to prevent contaminated products from reaching consumers.
The outbreak has caused notable declines in foot traffic at dining establishments. Taco Bell experienced an 18.9% drop, attributed to its connection with the investigation. Other chains like Chopt, Chipotle, Panera Bread, and Cava also reported decreases.
Food safety investigators often struggle to link recalled produce with outbreaks. Tests for food poisoning tend not to identify cyclospora due to its challenging lab growth and testing limitations. Investigators rely on patterns and timing to draw conclusions.
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