The CDC and FDA identified shredded iceberg lettuce from Mexico sold to Taco Bell restaurants as the source of a multistate cyclospora outbreak [1, 2].
The discovery marks a critical step in containing an outbreak of cyclosporiasis, a parasitic infection that causes severe diarrheal illness. Because the contamination involves a major fast-food chain, the risk of widespread exposure is high.
The outbreak has affected five states [1, 3], including Indiana, Kentucky, and Michigan [1]. While the specific Taco Bell link is concentrated in these areas, broader reports indicate cyclospora infections have been documented in 34 states [4].
Two people familiar with the investigation identified Taylor Farms as the supplier of the shredded iceberg lettuce linked to the cases [2]. A spokesperson for Taylor Farms said the company is removing all of its iceberg lettuce from central Mexico from the U.S. market [5].
Public health officials have issued a direct warning to the public regarding the contaminated produce. A CDC spokesperson said, "Consumers should not eat shredded iceberg lettuce from Taco Bell restaurants in the affected states" [2].
The investigation focused on the parasite Cyclospora, which typically contaminates fresh produce during the growing or harvesting process. The FDA and CDC are continuing to trace the supply chain to ensure no other products from the same supplier remain in circulation [1, 2].
“"Consumers should not eat shredded iceberg lettuce from Taco Bell restaurants in the affected states."”
This outbreak highlights the vulnerabilities in the international produce supply chain, where a single contaminated source in Mexico can lead to illness across multiple U.S. states. The discrepancy between the localized Taco Bell outbreak in five states and the broader presence of the parasite in 34 states suggests that other sources of contamination may exist or that the parasite is more widespread in the current produce cycle.
