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': 'Subacute sclerosing pan- encephalitis is associated with- \nSelect and explain. \nA. Mumps, B. Measles, C. Rubella, D. Typhoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The more serious neurological complications of measles include febrile convulsions, encephalitis, subacute sclerosing pan-encephalitis (SSPE) SSPE characterized by progressive mental deterioration leading to paralysis, involuntary movements, muscle rigidity and coma. Frequency of SSPE is about 1:300,000 cases of natural measles. Ref:PARK&;S TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICINE 23rd edition , Page:148.', 'role': 'assistant'}]