Cyclospora outbreak impacts Philly businesses as FDA finds lettuce test was false positive

The Brief FDA says lettuce sample from Mexico tested negative for Cyclospora after a false positive. The FDA announced a false positive in Cyclospora testing on lettuce from a Mexican supplier, but the outbreak is still affecting local businesses and families, according to FDA.gov. The backstory:The Cyclospora outbreak has been top of mind for many since officials first linked it to lettuce. The FDA’s recent announcement about the false positive has added confusion for families and businesses trying to make safe choices. What we don't know:It is not yet clear what is causing the Cyclospora outbreak or when the source will be identified.