FDA Confirms False Positive for Cyclospora in Taylor Farms Lettuce

The US Food and Drug Administration (FDA) announced on Sunday, July 20, 2026, that a laboratory re-examination of a lettuce sample from Taylor Farms has concluded the initial finding of the cyclospora parasite was a false positive. This determination follows an investigation into an outbreak of the parasitic illness that has affected numerous individuals across the United States.

Taylor Fresh Foods, a spokesperson for Taylor Farms, confirmed that the company was informed by the FDA of this error. The FDA's statement on Sunday indicated that, as of that date, there were no confirmed positive sample results for cyclospora. This contradicts an announcement made by the FDA on Saturday, July 19, 2026, which stated that a sample of shredded iceberg lettuce supplied by Taylor Farms had tested positive for the parasite.

The FDA's investigation into the outbreak involved re-checking sample results from Taylor Farms. The agency's laboratory experts conducted a thorough review and ultimately determined that the initial positive result should be classified as a false positive. This clarification aims to address concerns and provide accurate information regarding the source of the cyclospora contamination.