The FDA is investigating a separate cyclosporiasis outbreak not linked to lettuce. Last week, Hudson Valley Post reported that health experts were concerned that the parasitic diarrhea outbreak may spread beyond lettuce. Cyclosporiasis Outbreak May Spread Beyond LettuceChip Somodevilla, Getty Images Chip Somodevilla, Getty ImagesFormer CDC Director Robert Redfield warned consumers to remain cautious about all fresh produce sourced internationally. The FDA is now investigating almost a hundred new cases, not linked to the first outbreak. The FDA confirmed it's investigating a separate, newly announced cyclosporiasis outbreak involving at least 93 illnesses from an as-yet-unidentified food source and location.