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
[{'content': 'Most common organism causing meningitis in a 1 year old child is: \nSelect and explain. \nA. Streptococcus pneumoniae, B. H. influenza, C. Listeria, D. Neisseria meningitidis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The common organisms causing acute bacterial meningitis in the neonatal period are E.coli, Streptococcus pneumonia, Salmonella species, Pseudomonas aeruoginosa, Streptococcus fecalis and Staphylococcus aureus. Ref: Ghai Essential Pediatris - 6th Edition, Page 517; Nelson 17th Edition, Page 2308.', 'role': 'assistant'}]