This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli), Subject name: Microbiology
The following bacteria are most often associated with acute neonatal meningitis except: 
Select and explain. 
A. Escherichia coli, B. Streptococcus agalactiae, C. Neisseria meningitidis, D. Listeria monocytogenes
C: Neisseria meningitidis
Answer: C: Neisseria meningitidis 
Explanation: Neisseria meningitidis is not associated with acute neonatal meningitis. Option 1, 2, 3, 4 Causes of Meningitis are: a) Neonatal < 1 Month: - Bacterial causes: Esch. coli > Group B Streptococci >Other Gram Negative bacilli> Listeria monocytogenes. - Viral and Protozoal Infection: TORCH, Varicella Zoster and HIV. - Spirochetal and fungal infections. b) 1 -11 Month: N. meningitidis > Strep pneumoniae > H. influenzae. c) 1 -20 Years: N. meningitidis > Strep pneumoniae > H. influenzae. d) More than 20 Years: Strep pneumoniae.