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
After 5 days of bih, baby developed poor feeding, convulsions, fever with low protein low sugar and high chloride (in CSF) is most likely due to ? 
Select and explain. 
A. Listeria monocytogenes, B. Mycoplasma pneumoniae, C. T.B., D. Leptospira
A: Listeria monocytogenes
Answer: A: Listeria monocytogenes 
Explanation: Ans. is 'a' i.e., Listeria monocytogenes o We cannot get the answer from CSF values because there is no meningitis which lowers CSF protein. o But we have to choose one answer. o There is only one organism among the four options which can cause neonatal meningitis - Listeria monocytogenes.