This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'Which of the following is the "Least Common Chronic" complication of measles? \nSelect and explain. \nA. Diarrhoea, B. Pneumonia, C. Otitis media, D. SSPE', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., SSPE(Ref: PSM Park, 19th/e, p. 128)* Subacute sclerosing panencephalitis (SSPE) is a rare complication (1 in 300000) of measles, which develops many years after the initial infection.* SSPE belongs to group C slow virus infection, caused by a defective Measles virus.", 'role': 'assistant'}]