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
[{'content': 'Index for estimating explosion of plague? \nSelect and explain. \nA. Cheopis index, B. Total flea index, C. Burrow index, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: - cheopis index is the average number of Xenopsylla cheopis per rat. - most significant than total flea index. -it is the best indicator for a potential explosiveness of plague outbreak. Reference : Park's textbook of preventive and social medicine, 23rd edition, pg no:294 <\\p>", 'role': 'assistant'}]