Mexico says there is no evidence its lettuce caused US outbreak

A drone view shows Taylor Farms Mexico's facilities after the U.S. Food and Drug Administration said that the basis for linking Taylor Farms lettuce from central Mexico to the largest U.S. foodborne illness outbreak in recent years remains unchanged, defending its decision to publicize a sample that a later review found was a false positive for the Cyclospora parasite, in Doctor Mora, Guanajuato state, Mexico, July 20, 2026. REUTERS/Demian Sanchez/File Photo

MEXICO CITY, July 21 (Reuters) - There is no evidence as yet to suggest lettuce ⁠sourced from Mexico caused a cyclosporiasis outbreak in the U.S., Mexico's Health ‌Minister David Kershenobich said on Tuesday.

The statement follows a U.S. Food and Drug Administration report on Monday indicating traceback data pointed to shredded iceberg lettuce from Taylor Farms locations in central Mexico.

The outbreak, which causes ​severe diarrhea and other gastrointestinal symptoms, has been linked ⁠to lettuce served at Taco Bell ⁠restaurants in Indiana, Kentucky, Michigan, Ohio, and West Virginia. The U.S. Centers for Disease ⁠Control ‌and Prevention has reported approximately 100 hospitalizations related to the parasitic infection. Taco Bell is owned by Yum Brands.

"So far, no evidence has been found to ⁠indicate that it originated there," Kershenobich said during a ​regular government press conference, referring ‌to the central Mexican state of Guanajuato where he said authorities were ⁠looking into the ​issue. "However, we are taking all precautions in case that were the case," he added.

The FDA's investigation into the source of the outbreak has been beset by conflicting information. On Saturday the agency ⁠said a sample of Mexican lettuce from supplier ​Taylor Farms had tested positive for the parasite, only to announce on Sunday the result was a false positive following a re-review of the data.

The agency then came out on ⁠Monday to say its supply chain investigation continues to point to the company's Mexican facilities as the source of the parasite.

Mexico's sanitary regulator, Cofepris, and agricultural safety body, Senasica, said in a joint statement on Friday that an interagency technical group is conducting "strictly preventive" ​inspections and traceability analyses to mitigate health risks.

Taylor Farms' ⁠growing and processing facilities in Mexico were the source of a major U.S. cyclosporiasis outbreak ​in 2013 that sickened more than 600 people in ‌25 states and was traced to salad mix ​from Taylor Farms de Mexico in Guanajuato, according to the CDC.

(Reporting by Raul Cortes and Natalia Siniawski, Editing by Daina Beth Solomon and Chris Reese)