The FDA linked shredded lettuce served at Taco Bell to a cyclosporiasis outbreak, but the contamination and fallout may extend further.

Federal officials have not confirmed a source yet—and there may be multiple sources.

Michigan, which is where much of the outbreak is centered, has reported over 4,300 cases of cyclosporiasis, which can cause diarrhea and a low grade fever.

Nearly 7,000 cases of cyclosporiasis have been reported across the country