The FDA says Taylor Farms' lettuce cyclospora result was a false positive

The FDA backtracked on its statement last week that shredded lettuce from Taylor Farms tested positive for Cyclospora. Oksana Karuniene/Getty Images On Sunday, the FDA said an earlier test involving a Taylor Farms lettuce sample produced a "false positive." As of July 19, the FDA said there are no confirmed positive sample results for Cyclospora. The parasite has sickened thousands of Americans. The US Food and Drug Administration on Sunday walked back an earlier finding that a lettuce sample supplied by Taylor Farms had tested positive for Cyclospora, the parasite that has sickened thousands of Americans. "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 said in a statement on its website. As of Sunday, the FDA said there are no confirmed positive sample results for Cyclospora. In a Sunday statement, Taylor Farms said it welcomed the FDA's update. "Today, FDA apologized to us. Yesterday, FDA informed Taylor Fresh Foods that one of its iceberg lettuce products from central Mexico tested positive for cyclospora. Today, we were informed that FDA made a mistake, and this was a false positive," the statement read. Taylor Farms said it had voluntarily recalled iceberg lettuce grown and processed in central Mexico "out of an abundance of caution" after the initial findings and would continue to cooperate with health officials. On Thursday, the FDA linked shredded iceberg lettuce supplied to Taco Bell restaurants in five states to an ongoing cyclosporiasis outbreak , saying its traceback investigation had pointed to a "single supplier of iceberg lettuce from Mexico." The agency said shredded lettuce served at Taco Bell locations in Indiana, Kentucky, Michigan, Ohio, and West Virginia was responsible for 1,644 confirmed cyclosporiasis cases. On Friday, it named Taylor Farms as the source of the l