FDA says Taylor Farms lettuce sample tested for cyclospora produced false positive for the parasite

A Food and Drug Administration test on a sample of lettuce from a supplier that has recalled products because of a multistate cyclosporiasis outbreak produced a false positive for the parasite, the agency said Sunday. The false positive was discovered when the FDA again reviewed the results of a sample from Taylor Farms de Mexico that was reported positive Saturday. “As of July 19, 2026, there are no confirmed positive sample results for product testing for Cyclospora,” the agency said in its statement. The false positive does not change the company’s earlier voluntary recall of its iceberg lettuce that was sourced from central Mexico. Taylor Farms, which produces lettuce for Taco Bell and multiple grocery retailers, continues “working with the firm to ensure product implicated in this outbreak has been removed from the market,” the FDA said in a statement Sunday evening.