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': 'Moality rate of measles in developing countries? \nSelect and explain. \nA. 10%, B. 20%, C. 30%, D. 40%', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 10% Measles-associated moality is usually higher among the very young and very old. Moality in developing countries may be as high as 10 to 15% due to one or several factors, including the early age of infection, malnutrition, diarrhea, concomitant/secondary bacterial infections, and lack of access to good medical care. Most common cause of death is pneumonia in children and encephalitis in adults.", 'role': 'assistant'}]