Taco Bell announced Thursday it would remove lettuce from some of its stores after the Food and Drug Administration identified shredded iceberg lettuce as the potential source of the cyclosporiasis ou...

Federal health officials have identified lettuce from Mexico served by Taco Bell locations across five U.S. states as a source of the widespread outbreak of diarrhea-causing parasite cyclospora.

Nearly 7,000 cases of cyclosporiasis -- both confirmed and under investigation -- have been reported across the country.