Acute Bacterial Meningitis in Qatar: A Hospital-Based Study from 2009 to 2013

Table 4

Distribution of microorganisms in relation to the age group.

Microorganism	Age group									Total
	<1	1–5	6–14	15–24	25–34	35–44	45–54	55–64	≥65
Abiotrophia species	0	0	0	0	0	1	0	0	0	1 (0.8)
Acinetobacter baumannii	0	0	0	0	0	2	3	2	1	8 (6.8)
Acinetobacter lwoffii	0	1	1	0	1	0	0	0	0	3 (2.6)
Brucella spp.	0	0	0	0	0	0	1	0	0	1 (0.8)
Chryseobacterium (Flavobacterium) meningosepticum	1	0	0	0	0	0	0	0	0	1 (0.8)
Chryseobacterium indologenes	1	0	0	0	0	0	0	0	0	1 (0.8)
Enterobacter aerogenes	1	0	0	0	0	0	0	0	0	1 (0.8)
Enterobacter cloacae	0	0	0	0	0	1	2	0	0	3 (2.6)
Enterococcus faecalis	2	1	0	0	0	1	2	1	0	7 (5.9)
Enterococcus gallinarum	0	0	0	0	0	0	1	0	0	1 (0.8)
Escherichia coli	2	1	0	0	0	1	0	0	0	4 (3.4)
Gemella haemolysans	0	0	0	1	0	0	0	0	0	1 (0.8)
Haemophilus influenzae	0	1	0	1	0	0	0	0	0	2 (1.6)
Klebsiella pneumoniae ssp. pneumoniae	2	0	0	2	1	1	4	2	0	12 (10.3)
Leuconostoc species	0	0	0	0	0	0	1	0	0	1 (0.8)
Listeria monocytogenes	3	0	0	0	0	0	0	0	0	3 (2.6)
Neisseria meningitidis	0	1	0	3	3	1	2	0	1	11 (9.4)
Pseudomonas aeruginosa (PSA)	0	0	1	0	2	1	1	0	0	5 (4.2)
Pseudomonas putida	0	0	0	0	1	0	0	0	0	1 (0.8)
Salmonella group B	1	0	0	0	0	0	0	0	0	1 (0.8)
Serratia marcescens	1	0	0	0	0	0	0	0	0	1 (0.8)
Staphylococcus aureus	0	0	1	0	0	0	0	0	0	1 (0.8)
Staphylococcus capitis	0	0	0	0	0	1	1	0	0	2 (1.6)
Staphylococcus epidermidis	6	2	0	2	1	3	1	1	0	16 (13.6)
Staphylococcus haemolyticus	0	0	0	0	1	1	0	0	0	2 (1.6)
Streptococcus agalactiae	2	0	0	0	0	0	0	0	1	3 (2.6)
Streptococcus bovis II	1	0	0	0	0	0	0	0	0	1 (0.8)
Streptococcus intermedius	0	0	0	0	0	1	0	0	0	1 (0.8)
Streptococcus milleri	0	0	0	1	0	0	0	0	0	1 (0.8)
Streptococcus mitis	0	1	0	0	0	0	0	0	0	1 (0.8)
Streptococcus pneumoniae	3	2	3	2	3	2	4	0	0	19 (16.2)
Streptococcus salivarius	0	1	0	0	0	0	0	0	0	1 (0.8)
Total	26 (22.2)	11 (9.4)	6 (5.1)	12 (10.3)	13 (11.1)	17 (14.5)	23 (19.7)	6 (5.1)	3 (2.6)	117 (100)