Yersiniosis

Infectious agent: :  Yersiniosis is an enteric illness caused by Yersinia enterocolitica bacteria, or less commonly, Yersinia pseudotuberculosis.  It is an infection caused most often by eating raw or undercooked pork contaminated with Yersinia enterocolitica bacteria.

Description of illness: In young children symptoms of infection include diarrhea (often bloody), fever and abdominal pain.  Symptoms in adults and older children include fever and abdominal pain, which can be confused with appendicitis.