Taco Bell Lettuce Investigated in Growing Cyclospora Outbreak, Yum Brands Shares Fall

Barchart·07/15/2026 00:04:18

Yum Brands ($YUM) shares fell after a report said federal and state health officials are investigating whether lettuce served at Taco Bell may be linked to a multistate cyclospora outbreak. Taco Bell has reportedly removed lettuce and certain other fresh ingredients from some restaurants as a precaution while the investigation continues.

• Yum Brands shares fell as much as 4.5% following reports of the investigation.
• Health officials are examining whether Taco Bell was associated with a multistate cyclospora outbreak.
• Taco Bell has reportedly stopped serving lettuce and some fresh ingredients at select locations as a precaution.
• The CDC reported 1,645 lab-confirmed cases, 141 hospitalizations, and no deaths as of July 13.
• The outbreak began on May 1, with Michigan, Ohio, and New York reporting the highest case counts.

Relevant Companies

• Yum Brands ($YUM) - Taco Bell is under investigation as officials examine a possible link between its lettuce and the outbreak.
• McDonald's ($MCD) - The company has previously faced cyclospora-related food safety investigations, highlighting broader industry sensitivity.
• Chipotle Mexican Grill ($CMG) - Restaurant stocks have historically reacted sharply to foodborne illness investigations following Chipotle's past outbreaks.

Editor’s Note: This is a developing story. This article may be updated as more details become available.

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