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: Social & Preventive Medicine
[{'content': 'Chemoprophy laxis with tetracycline is useful in which of the following ? \nSelect and explain. \nA. Cholera, B. Brucellosis, C. Meningitis, D. Leptospirosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cholera o Tetracycline is the drug of choice for chemoprophylaxis in cholera and plague.", 'role': 'assistant'}]