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
[{'content': 'Which of the following is the MOST common cause of sporadic viral encephalitis in adults? \nSelect and explain. \nA. Herpes virus, B. Enteroviruses, C. Ebstein-Barr virus, D. HIV', 'role': 'user'}, {'content': "Answer: A \nExplanation: The most commonly identified viruses causing sporadic cases of acute encephalitis in adults are herpesviruses (HSV, VZV, EBV). Note Frequently Asked: Enteroviruses (coxsackieviruses, echoviruses, and human enteroviruses 68-71) are the most commonly identified viruses causing sporadic cases of acute meningitis. Ref: Roos K.L., Tyler K.L. (2012). Chapter 381. Meningitis, Encephalitis, Brain Abscess, and Empyema. In D.L. Longo, A.S. Fauci, D.L. Kasper, S.L. Hauser, J.L. Jameson, J. Loscalzo (Eds), Harrison's Principles of Internal Medicine, 18e", 'role': 'assistant'}]