Health officials have not publicly linked the outbreak to any of the restaurants as of Wednesday, and haven’t identified the source of the parasite.

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The cyclosporiasis outbreak has sickened thousands of people nationwide, and Michigan has been the hardest hit.

Taco Bell is addressing concerns about cyclospora by removing ingredients amid the CDC's ongoing investigation into the multistate outbreak.

Health officials have not publicly linked the outbreak to any of the restaurants as of Wednesday, and haven’t identified the source of the parasite.

“Early information has shown lettuce as a common product that regularly comes up during the investigation,” said the Michigan health department.

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.

As cyclosporiasis spreads and Taco Bell pulls some ingredients out of caution, one can't help but think of other restaurants that might be at risk.

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Shredded iceberg lettuce supplied by Taylor Farms and sold at some Taco Bell restaurants has been linked to a multistate outbreak of cyclosporiasis, a source familiar with the…

A lettuce supplier to fast-food giant Taco Bell is being investigated as a possible source for a nationwide cyclosporiasis outbreak that has sickened thousands of people.

Taco Bell, which had previously removed some ingredients from some stores amid the cyclosporiasis outbreak has now pulled lettuce in several states.

The Centers for Disease Control and Prevention has recorded at least 1,645 cases of the parasite this year.