Why the FDA's Cyclospora false positive doesn't end the investigation
Summary
The FDA says a lettuce sample previously believed to contain Cyclospora was a false positive, but the investigation isn't over. A UNC Health infectious disease expert explains why one test result doesn't erase other evidence. The U.S. Food and Drug Administration’s announcement that a lettuce sample previously believed to contain the Cyclospora parasite was a false positive has left many consumers wondering whether investigators are back at square one.