Which bacterium is naturally found in the intestinal tract of animals, especially pigs, and is commonly present in pork and pork products such as chitterlings, and can cause yersiniosis?

Which bacterium is naturally found in the intestinal tract of animals, especially pigs, and is commonly present in pork and pork products such as chitterlings, and can cause yersiniosis?

• A. Yersinia enterocolitica
• B. Salmonella enterica
• C. Listeria monocytogenes
• D. Campylobacter jejuni

Answer: (A)

The key idea is that a bacterium that naturally lives in animal intestines, especially pigs, can contaminate pork products and cause yersiniosis. Yersinia enterocolitica fits this perfectly: it is commonly found in the intestinal tracts of animals, with pigs being a notable reservoir, and it can be present in pork and pork products such as chitterlings. In humans, it causes yersiniosis, an illness characterized by diarrhea and abdominal pain that can mimic appendicitis. An important clinical detail is that Yersinia enterocolitica can grow at refrigeration temperatures, which means it can persist or even multiply in refrigerated pork products if they’re undercooked or cross-contaminated. While other bacteria like Salmonella, Listeria, or Campylobacter are also foodborne pathogens, the combination of being a natural pig reservoir, association with pork products like chitterlings, and the specific disease name yersiniosis points to Yersinia enterocolitica.

The key idea is that a bacterium that naturally lives in animal intestines, especially pigs, can contaminate pork products and cause yersiniosis. Yersinia enterocolitica fits this perfectly: it is commonly found in the intestinal tracts of animals, with pigs being a notable reservoir, and it can be present in pork and pork products such as chitterlings. In humans, it causes yersiniosis, an illness characterized by diarrhea and abdominal pain that can mimic appendicitis.

An important clinical detail is that Yersinia enterocolitica can grow at refrigeration temperatures, which means it can persist or even multiply in refrigerated pork products if they’re undercooked or cross-contaminated. While other bacteria like Salmonella, Listeria, or Campylobacter are also foodborne pathogens, the combination of being a natural pig reservoir, association with pork products like chitterlings, and the specific disease name yersiniosis points to Yersinia enterocolitica.