FDA Retracts Positive Cyclospora Border Sample as False Positive

FDA withdraws a Cyclospora-positive test result from a lettuce sample detained at the Laredo, Texas border crossing, stating the result 'does not represent true amplification.' The recall remains in effect despite the retraction, as the traceback and epidemiological case-control evidence still point to the same supplier; no product sample would go on to test positive for Cyclospora over the course of the investigation.