ms ?Neonates and infants at age 2-3 months ?Escherichia coli?B-haemolytic i?us aureus?us epidermidis?Listeria monocytogenesРEtiologyРElderly and promised?Listeria monocytogenes?Gram negative bacteria?Hospital-acquired infections?Klebsiella?Escherichia coli?Pseudomonas?us aureusРEtiologyРThe anisms ?Neonates and infants under the age of 2months?Escherichia coli ?Pseudomonas ?Group B us?us aureusРEtiologyРChildren over 2 months?Haemophilus influenzae type b?Neisseria meningitidis?us pneumoniae?Children over 12 years?Neisseria meningitidis?us pneumoniaeРEtiologyРMajor routes of leptomening infection?Bacteria are mainly from blood.?monly, meningitis occurs by direct extension from nearly focus (mastoiditis, sinusitis) or by direct invasion (dermoid sinus tract, head trauma, meningo-myelocele).
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