Food Safety Case Studies
What real outbreaks teach about food safety — and what they cost.
Case study
PCA Salmonella Outbreak of 2008: A Case Study
The Peanut Corporation of America (PCA) Salmonella outbreak stands as one of the most devastating food safety failures ever recorded in the United States. Between 2008 and 2009, Salmonella-contaminated peanut products were linked to over 700 illnesses, at least nine deaths, and one of the largest food recalls in U.S. history.
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Chipotle E. Coli Outbreak: Food Safety Case Study
Between 2015 and 2018, Chipotle Mexican Grill experienced a series of highly publicized foodborne illness outbreaks involving E. coli, norovirus, and Salmonella. These incidents affected customers across multiple states and resulted in significant regulatory action, financial loss, and long-term reputational damage.
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Boar's Head Listeria Outbreak Case Study
In 2024, Boar's Head Provisions Co. — a well-known producer of premium deli meats and ready-to-eat (RTE) foods — became the center of one of the largest Listeria monocytogenes outbreaks in recent U.S. history. The outbreak, traced to contaminated liverwurst and other deli meat products produced at the company's Jarratt, Virginia facility, resulted in at least 10 deaths and dozens of hospitalizations across multiple states and triggered a nationwide recall of millions of pounds of products.
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Blue Bell Listeria Outbreak: What Went Wrong
The Blue Bell Creameries Listeria monocytogenes outbreak is one of the most consequential food safety failures in U.S. manufacturing history. Linked to ice cream products produced between 2010 and 2015, the outbreak resulted in multiple illnesses, three confirmed deaths, a nationwide recall, and a temporary shutdown of all Blue Bell production facilities.
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Case Study: The 1992–1993 Jack in the Box E. coli Outbreak
In late December 1992 through February 1993, a severe E. coli O157:H7 foodborne illness outbreak was traced to undercooked hamburgers served at Jack in the Box fast-food restaurants across the western United States. The outbreak is widely considered one of the most consequential food safety incidents in U.S. history.
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