This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pediatrics
Most common organism causing neonatal meningitis is 
Select and explain. 
A. E. coli, B. Listeria, C. Pseudomonas, D. Staph aureus
A: E. coli
Answer: A: E. coli 
Explanation: The most common causes of neonatal meningitis is bacterial infection of the blood, known as bacteremia (specifically group B streptococci (Streptococcus agalactiae), Escherichia coli, and Listeria monocytogenes . Reference: GHAI Essential pediatrics, 8th edition