FDA still focused on lettuce supplier as source of parasite, despite faulty test result

WASHINGTON — Federal health officials said Monday they remain focused on lettuce from Taylor Farms as the source of a multistate outbreak of a diarrhea-causing parasite, despite inaccurate test results that the government briefly publicized over the weekend.

Food and Drug Administration officials on Monday said a laboratory test incorrectly identified a positive result for cyclospora on a sample of lettuce from Taylor Farms. The FDA posted the finding to its website on Saturday but then said Sunday that the result had been a false positive.

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