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: Pediatrics
Subacute sclerosing panencephalitis is late neurological complication associated with infection due to 
Select and explain. 
A. Mumps virus, B. Measles virus, C. Rubella virus, D. Para influenza virus
B: Measles virus
Answer: B: Measles virus 
Explanation: Subacute sclerosing panencephalitis occurs 7 - 13 years after primary meastes infection. It has fatal outcome.