School of Medicine Publications and Presentations

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Yersinia enterocolitica is a gram-negative, rod-shaped, pleomorphic bacteria that is a common source of infectious gastroenteritis. In the United States, Centers of Disease Control and Prevention note yearly 117,000 illnesses, 640 hospitalizations, and 35 deaths [1]. Termed Yersiniosis, the infection is most often acquired via fecal-oral transmission, with sources arising from contaminated pork and unpasteurized milk. Following the fecal-oral transmission, the pathogen invades the intestinal lumen and attaches to the brush border [2]. The clinical presentation includes low-grade fever, vomiting, and invasive diarrhea and further manifestations range from pseudoappendicitis and reactive arthritis [2-3]. Although well-known for its ability to cause gastroenteritis, a review of literature lacks pertaining reports of Y. enterocolitica infection presenting with oral pustular lesions. This report serves to describe a unique case of a 71-year-old Hispanic man who presented with Yersiniosis, leading to the development of oral pustular lesions.


Submitted to Expert Review of Gastroenterology & Hepatology

Academic Level

medical student

Available for download on Friday, September 25, 2026