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': 'Immunoprophylaxis of leprosy includes - \nSelect and explain. \nA. BCG, B. MMR, C. ICRC bacillus, D. Anthrax vaccine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: For immunoprophylaxis , trials in different population groups with BCG vaccine either alone or in combination with other vaccine have shown protective efficacy ranging between 28% and 60%. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 344', 'role': 'assistant'}]