Cause of bacterial meningitis and its treatment during the neonatal period (0-28 days)
are generally different from those in older infants and children
First 2 mo of life - maternal flora or the environment of the infant - group B
Streptococcus, gram-negative enteric bacilli, and Listeria monocytogenes, H. influenzae
Bacterial meningitis in children 2 mo-12 yr of age is due to S. pneumoniae, N.
meningitidis, or H. influenzae type b.