This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
[{'content': 'Mass chemoprophylaxis in an endemic area is given for all except? \nSelect and explain. \nA. Leprosy, B. Yaws, C. Trachoma, D. Filariasis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Mass chemoprophylaxis is not given for preventing leprosy Ref : Park's Textbook of Preventive medicine", 'role': 'assistant'}]