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

Table 1 Bacterial meningitis in three periods according to pathogen

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

* Mean annual Incidence Rate per 100,000 children
** "Probable" bacterial meningitis cases not including "probable" meningococcal meningitis cases
*** 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

ISSN: 1471-2334