This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
Plague is transmitted by - 
Select and explain. 
A. Mite, B. Flea, C. Sand fly, D. None
B: Flea
Answer: B: Flea 
Explanation: - plaque is primarily a zoonoses caused by Yersenia pestis. -The commonest and the most efficient vector of the plaque is rat flea, Xenopsylla cheopis. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:293 <\p>