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Table 1 Bacterial meningitis in three periods according to pathogen

From: Meningitis registry of hospitalized cases in children: epidemiological patterns of acute bacterial meningitis throughout a 32-year period

Organism 1974–1984 1985–1994 1995–2005 Total
  N % IR* N % IR* N % IR* N % IR*
N. meningitidis - probable 238 18.0 3.4 63 10.5 1.6 113 20.3 3.3 414 16.7 2.8
N. meningitidis - confirmed 386 29.3 5.5 197 32.8 5.2 255 45.7 7.6 838 33.8 6.1
N. meningitidis - total 624 47.3 8.9 260 43.3 6.8 368 65.9 10.9 1252 50.5 8.9
S. pneumoniae 90 6.8 1.3 46 7.7 1.2 50 9.0 1.5 186 7.5 1.3
H. influenzae type b 100 7.6 1.4 138 23.0 3.6 14 2.5 0.4 252 10.2 1.7
Other bacteria*** 29 2.2 0.4 13 2.2 0.3 13 2.3 0.4 55 2.2 0.4
Unspecified** 476 36.1 6.7 143 23.8 3.6 113 20.3 3.3 732 29.6 4.6
Total 1319 100 18.7 600 100 15.5 558 100 16.5 2477 100 16.9
  1. * Mean annual Incidence Rate per 100,000 children
  2. ** "Probable" bacterial meningitis cases not including "probable" meningococcal meningitis cases
  3. *** group B Streptococcus, Salmonella spp, Streptococcus spp, Pseudomonas aeruginosa, Escherichia coli, Staphylococcus spp, Brucella melitensis, Klebsiella pneumoniae, Acinetobacter anitratus, Enterobacter cloaca, Mycoplasma pneumoniae, Proteus spp, Rickettsiae spp
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