( FDA )

The Food and Drug Administration has announced that a multi-state outbreak of cyclosporiasis illnesses likely linked to salads from McDonald’s restaurants appears to be over.

The agency said a total of 511 laboratory-confirmed cases of cyclospora infection were reported in people who consumed salads from McDonald’s restaurants. The cases were reported by 15 states and New York City, according to the FDA.

The FDA said it investigated distribution and supplier information for romaine and carrots but did not identify a single source or potential point of contamination for this outbreak.