FDA Retracts Link Between Taylor Farms Lettuce and Cyclospora Outbreak

FDA Retracts Taylor Farms Lettuce Finding

The Food and Drug Administration recently issued a correction regarding its investigation into a significant outbreak of Cyclospora, a microscopic parasite that causes severe gastrointestinal distress. Agency officials stated that a sample of iceberg lettuce from Taylor Farms, initially flagged as positive for the parasite, was actually a false positive. In a statement released Sunday, the agency explained: Due to the complexity in detection of Cyclospora, FDA laboratory experts re-reviewed the sample results and have concluded that the finding does not represent true amplification and should be considered a false positive.

The FDA confirmed that the sample in question was collected during targeted surveillance and was not part of the specific lots included in the voluntary recall initiated by the supplier on July 17. Despite the retracted finding, the agency continues working with the firm to ensure product implicated in this outbreak has been removed from the market. The infections were first detected on 13 May, according to the FDA.

Scope of the Taylor Farms Product Recall

Even with the false positive result, Taylor Farms has maintained its recall of shredded iceberg lettuce and salad kits sourced from central Mexico. The recall covers products distributed to various food service operators and retailers, including Walmart, where affected Marketside-branded items were sold. Taylor Fresh Foods distributed recalled iceberg products to food service operator Sysco Foods—the largest food service supplier in the United States—and directly to other customers from June 29 through July 16 in 26 states including Alabama, Arkansas, Connecticut, Florida, Georgia, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Michigan, Missouri, Mississippi, North Carolina, New Hampshire, New Jersey, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Texas, Virginia, and Wisconsin.

Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia are among the food service outlets affected. In its own response, the company stated it has stopped receiving product from the implicated lot, suspended distribution of the iceberg lettuce from Central Mexico, notified [its] customers and [is] continuing to work with the FDA, CDC, and state authorities. Consumers are urged to check products for Best if Used By dates ranging from July 18, 2026, to August 3, 2026, as the items may still be in household refrigerators due to their shelf life.

Outbreak Data and Regional Impacts

The scale of the outbreak has varied significantly by state, with health departments reporting figures that exceed the federal count. According to reporting, the discrepancy stems from the Centers for Disease Control and Prevention (CDC) having stopped tracking Cyclospora and seven other foodborne pathogens on July 1, 2025. As of July 17, the CDC reported 1,644 people infected with Cyclospora and reporting exposure to Taco Bell.

Health officials note that Cyclospora infections present with watery, often explosive diarrhea, nausea, vomiting, abdominal pain, body aches, and fatigue. Symptoms typically appear between two and 14 days after exposure. While hospitalization rates have been noted—with Michigan reporting 102 cases requiring inpatient care—deaths from the parasite are rare. Medical providers typically treat the infection with antibiotics, as the parasite can persist for a month or longer if left untreated. Michigan health officials noted that by this time of year, the state usually sees only 40 to 50 confirmed cases of Cyclospora.

Ongoing Investigation Status

With the initial link to Taylor Farms lettuce now categorized as a false positive, investigators are left without a confirmed source for the widespread illnesses. The CDC is currently investigating a broader set of 5,100 additional potential cases, suggesting that there may be multiple, concurrent outbreaks of the parasite across 34 states. As the investigation continues, authorities emphasize that the exact vehicle of transmission for the current cluster remains a subject of active inquiry.

Sources: bbc.co.uk, foodsafetynews.com.

Update (July 20, 2026)

According to cbsnews.com, the FDA stated as of Sunday that it has not found any confirmed positive sample results for product testing for Cyclospora. Taylor Farms noted that while the FDA traceback indicates a specific independent farm—representing less than 1% of the U.S. iceberg lettuce supply—is the potential source of the outbreak, the company has removed all iceberg lettuce from that region indefinitely.

The outbreak, which began in May, has now spread to 34 states. While the CDC reports more than 1,600 illnesses, state health department figures are significantly higher; for example, the Michigan Department of Health and Human Services reported more than 5,000 confirmed cases as of Friday. No deaths have been reported in connection with the illness.

Update (July 20, 2026)

According to washingtonpost.com, the FDA clarified that although the specific laboratory finding was a false positive, the agency has not backed away from its conclusion that Taylor Farms remains linked to the multistate outbreak through its traceback investigation. Susan Mayne, a former head of the FDA’s center on food safety, noted that the retraction does not mean the agency is walking back its investigation, stating that the absence of evidence from a positive test result is never evidence of absence. The outlet reports that numerous outbreaks are solved based on disease detective work, such as interviewing individuals who have fallen ill and tracing back the food items they consumed.