pediatrics
Neonatal Bacterial Meningitis
Etiology of Neonatal Bacterial Meningitis
Thepredominant pathogensare Streptococcal Infections (GBS—predominantly type III) Escherichia coli Infections (particularly those strains containing the K1 polysaccharide) Listeriosis None include Enterococcal Infections , nonenterococcal group D streptococci, Neonatal bacterial meningitis most frequently results from the bacteremia that occurs with Neonatal Sepsis ; the higher the colony count in the blood culture, the higher the risk of meningitis. Neonatal bacterial meningitis may also result from scalp lesions, particularly when developmental defects lead to communication between the skin surface and the subarachnoid space, which predisposes to thrombophlebitis of the diploic veins. Rarely, there is direct extension to the central nervous system (CNS) from a contiguous otic focus (eg, otitis media). 