This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Considerations - Infectious Diseases, Subject name: Pediatrics
[{'content': 'Most common cause of neonatal diarrhea worldwide is: \nSelect and explain. \nA. Rotavirus, B. Adenovirus, C. Norwalk virus, D. Cholera', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Rotavirus(Ref: Nelson's 20/e p 1616)In early childhood, the single most important cause of severe dehydrating diarrhea is rotavirus infection.", 'role': 'assistant'}]