This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
Causative agent of plague ? 
Select and explain. 
A. Yersinia pestis, B. Yersinia enterocolitica, C. Yersinia pseudotuberculosis, D. Pasteurella septica
A: Yersinia pestis
Answer: A: Yersinia pestis 
Explanation: Ans. is 'a' i.e., Yersinia pestis Infection caused by yersinia genus are divided into :? Plague :- It is a deadly infectious disease caused by yersinia pestis. Yersinosis :- It is characterized by infectious diarrhea, enteritis, ileitis and occasionally septicemia. It is caused by yersinia enterocolitica (most common) and yersinia pseudotuberculosis.