Cyclospora outbreak expands to 15 states as federal officials focus on recalled iceberg lettuce

A Cyclospora outbreak under investigation by federal health officials has expanded from five states to 15, with investigators focused on iceberg lettuce sourced from central Mexico and voluntarily recalled by Taylor Farms de Mexico.

The development, reported August 5, 2026, broadens a food-safety investigation affecting restaurants, produce suppliers and distributors. The FDA and CDC have not established every affected product or finalized how the contamination occurred, so the lettuce is being described as linked or potentially linked while the inquiry continues.

The investigation has immediate implications for restaurants and food-service businesses that received or served the lettuce, as well as consumers trying to determine whether a meal may have involved a recalled ingredient. Federal officials have not said that all Taylor Farms products or all restaurant lettuce is contaminated.

What federal officials are investigating

The FDA and CDC are investigating illnesses associated with iceberg lettuce from central Mexico. Taylor Farms de Mexico voluntarily recalled implicated iceberg lettuce as the investigation proceeded.

FDA information released in July identified restaurant-served shredded iceberg lettuce as part of the inquiry. That initial restaurant-linked investigation covered Taco Bell locations in Indiana, Kentucky, Michigan, Ohio and West Virginia, making five states at that stage.

The FDA’s investigation listed illness onset dates ranging from June 22 through July 20, 2026. The later update reported by The Associated Press connected the outbreak to 15 states as of August 5.

AP also reported that an earlier CDC update linked at least 1,645 illnesses and 141 hospitalizations to the outbreak, while federal officials were investigating thousands of additional reports. Those figures were part of an earlier update and do not represent a final count for the investigation.

Why the source remains unsettled

Federal officials are focusing on the recalled lettuce and restaurant distribution, but the investigation has not conclusively established the full contamination pathway. The FDA has characterized the lettuce as linked or potentially linked rather than declaring that it caused every reported illness.

A lettuce sample initially reported as positive was later described by the FDA as a false positive. That finding does not, by itself, resolve the broader epidemiological investigation, which includes illness reports, distribution information and additional evidence being reviewed by officials.

The distinction matters for restaurants, distributors and consumers. A product recall can identify a specific supply concern without showing that every item from a company, every location of a restaurant chain or every serving of lettuce is affected. The available federal information does not establish that Taylor Farms or Taco Bell caused every illness.

What happens next

The recall and federal investigation remain active. Officials still need to determine which products and distribution channels were affected and how the contamination may have occurred.

For the food-service industry, the investigation puts attention on supply-chain records connecting produce suppliers, distributors and restaurants. The FDA’s initial information identified shredded iceberg lettuce served at certain Taco Bell locations, while the broader update focused on a 15-state outbreak and recalled lettuce from central Mexico.

For the public, the most important verified change is the expansion in the outbreak’s known geographic scope—not a final determination that all restaurant lettuce or all products from the supplier are unsafe. The illness total, the list of affected products and the contamination pathway may change as federal officials continue their work.