Food-safety investigations often hinge on laboratory testing, recalls and epidemiological tracing that can shift as agencies review new evidence. That was the backdrop on July 21, 2026, when Health and Human Services Secretary Robert F. Kennedy Jr. said federal investigators had identified the source of a multistate cyclosporiasis outbreak that has sickened at least 1,600 people in five states, even after the FDA revised its own earlier lettuce test result.
Kennedy says the source has been identified as recall remains in place
Kennedy told ABC News on Tuesday, July 21, that the outbreak was “under control” and that officials had identified its source through what he described as “epidemiological forensics.” According to ABC News, he also said the government and the companies involved had already implemented a recall tied to the investigation. That marked one of his first public comments on the outbreak since the CDC and FDA began publicly detailing the five-state cluster.
Federal regulators had already linked the outbreak cluster to shredded iceberg lettuce served at some Taco Bell locations. The FDA said in a July 2026 outbreak notice that investigators were examining a five-state outbreak of Cyclospora illnesses associated with iceberg lettuce, while Taylor Fresh Foods announced a voluntary recall of multiple lettuce products sourced from central Mexico. The recall notice listed dozens of products distributed across 27 states with use-by dates extending into early August.
The FDA then issued a follow-up update saying a lettuce sample supplied by Taylor Farms de Mexico that had initially been reported as positive should not be treated as a true positive result. In that update, the agency said its laboratory experts re-reviewed the result and concluded the finding “should be considered a false positive.” Even with that correction, federal officials have continued to describe shredded iceberg lettuce linked to Taco Bell in five states as the identified source of that outbreak cluster.
What is confirmed is narrower than the nationwide case discussion that has accompanied the outbreak. The CDC and FDA have tied a specific five-state cluster to shredded iceberg lettuce served at certain Taco Bell restaurants, and ABC News reported that at least 1,600 people were sickened in those five states. The company has not released a comprehensive public list of every affected Taco Bell location tied to that cluster.
At the same time, officials have said other Cyclospora illnesses reported around the country remain under investigation. ABC News reported that no other source had been identified for domestically acquired infections being reported in 29 other states. That means the Taco Bell-linked lettuce finding addresses one major cluster, but not every Cyclospora case being tracked this summer.
The distinction matters because public case counts vary depending on whether agencies are counting only confirmed infections or also probable and suspected illnesses. Federal updates have focused on the five-state lettuce-linked outbreak, while state health departments in places such as Michigan and Ohio have reported much larger broader totals. For residents and restaurant customers, the practical takeaway is that the recall remains active and the identified five-state source does not yet account for every case being investigated nationwide.
Cyclospora outbreaks are difficult to investigate because fresh produce is perishable, contamination can be intermittent and laboratory confirmation is not always straightforward. The FDA’s false-positive correction underscored that challenge, with the agency saying the detection of Cyclospora required a re-review before it determined the sample did not represent true amplification. Investigators have therefore relied not only on product testing, but also on traceback work and case interviews.
The supply chain has also become a central part of the story. The FDA and multiple news reports said the lettuce at issue was supplied by Taylor Farms and sourced from central Mexico, and Taylor Farms said it would stop sourcing iceberg lettuce from that region for the rest of the growing season. That company action followed the voluntary recall and reflected the industry response as regulators narrowed the likely origin.
The federal response has also drawn political scrutiny. Sen. Jon Ossoff said in a July 20 letter that the CDC’s FoodNet no longer required reporting for the parasite that causes cyclosporiasis, while Kennedy told ABC News that criticism of the response was “invalid” and said surveillance and forensics work were continuing. For consumers, the immediate effect is continued monitoring, an active recall and a still-evolving national investigation centered on a now-identified five-state lettuce source.