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': 'Endemic typhus is transmitted by? \nSelect and explain. \nA. Flea, B. Tick, C. Mite, D. Mosquito', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> Endemic typhus is transmitted by flea. Reference:Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:299. <\\p>', 'role': 'assistant'}]