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: Microbiology
Most common cause of sporadic encephalitis ? 
Select and explain. 
A. EBV, B. HSV, C. Poliovirus, D. CMV
B: HSV
Answer: B: HSV 
Explanation: Ans. is `b' i.e., HSV "HSV encephalitis is the most common sporadic acute viral encephalitis in most pa of the world." -- Ananthnarayan