Yum! Brands Alerted to Michigan Parasite Outbreak Weeks Before Public Disclosure, Report Says

Michigan health officials contacted Yum! Brands (NYSE:YUM) about a parasitic outbreak in early July, several weeks before the company publicly addressed the issue with consumers, according to a Bloomberg News report citing documents obtained through a public records request.

Timeline of Communication

The Michigan Department of Health and Human Services held a call with Yum on July 2 to discuss cases of cyclospora, a parasite that can cause intestinal illness. Following the call, state officials requested to speak with the company's supply chain and communications teams regarding potential interventions to prevent future cases.

An email from Michigan’s state epidemiologist, Sarah Lyon-Callo, to the company noted that Taco Bell had already received a media inquiry about some of its Michigan locations. "We have a strong signal from our epidemiologic interviews that we need to continue to work with Taco Bell," Lyon-Callo wrote, even though the company had not received direct complaints.

By July 6, the state's rapid response team requested documents related to the outbreak, stating the information was necessary "in a timely manner to preserve public health." This followed a broader advisory on July 4, in which the state urged businesses handling raw produce to take extra precautions.

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Public Awareness

The outbreak became public knowledge on July 7, not through an official company or government announcement, but after a news report showed signs allegedly posted at some Taco Bell restaurants in Michigan. These signs warned of an ingredient recall.

At the time the news broke, no formal recall had been announced by the U.S. Centers for Disease Control and Prevention (CDC), the Michigan Health Department, or Taco Bell itself. The documents suggest a significant gap between when the company was first alerted to the health concern and when the public became aware of the situation.