Definition Bacterial meningitis is usually an acute bacterial infection that evokes a polymorphonuclear response in CSF
Definition • Bacterial meningitis is usually an acute bacterial infection that evokes a polymorphonuclear response in CSF
山肾院 pidemiology Etiology
Epidemiology & Etiology
Causes of bacterial meningitis in adults B Community Nosocomial Streptococcus pneumoniae 38 8 Gram-negative bacilli Neisseria meningitidi 14 Listeria spp. 3 Streptococci 7 12 Listeriosis/Listeria Staphylococcus aureus 5 9 Haemophilus influenzae 4 Staphylococcal/ 9% Meningococcal/ Unspecified bacterium/ Meningocoque Bacterie non precise 6% 37% Streptococcal/ Pneumococcal/ Pneumocoque 21%
Causes of bacterial meningitis in adults
ETIOLOGY OF BACTERIAL MENINGITIS BY AGE <1 month Streptococcus agalactiae, Escherichia coli, listeria monocytogenes Klebsiella species 1-23 mos Streptococcus pneumoniae, Neisseria meningitidis, S agalactiae, Haemophilus influenzae, e coli 2-50 yrs N. meningitidis, S pneumoniae >50 yrs S pneumoniae, N. meningitidis, L. monocytogenes gram-negative bacilli
<1 month Streptococcus agalactiae, Escherichia coli, Listeria monocytogenes, Klebsiella species 1 - 23 mos Streptococcus pneumoniae, Neisseria meningitidis, S. agalactiae, Haemophilus influenzae, E. coli 2 - 50 yrs N . meningitidis, S. pneumoniae >50 yrs S.pneumoniae, N. meningitidis, L. monocytogenes, gram-negative bacilli ETIOLOGY OF BACTERIAL MENINGITIS BY AGE
ETIOLOGY OF BACTERIAL MENINGITIS BY PREDISPOSING CONDITION Immunocompromised state: S pneumoniae, N. meningitidis Listeria, aerobic gnr Basilar skull fracture: S pneumoniae, H influenzae, beta- hemolytic strep group a Head trauma or post-neurosurgery: S aureus, S epidermidis aerobic gnr CSF shunt: S epidermidis, S aureus, aerobic GNR, Propionibacterium acnes
ETIOLOGY OF BACTERIAL MENINGITIS BY PREDISPOSING CONDITION Immunocompromised state: S. pneumoniae, N. meningitidis, Listeria, aerobic GNR Basilar skull fracture: S. pneumoniae, H. influenzae, betahemolytic strep group A Head trauma or post-neurosurgery: S. aureus, S. epidermidis, aerobic GNR CSF shunt: S. epidermidis, S. aureus, aerobic GNR, Propionibacterium acnes