TABLE 1.

Distribution of S. pneumoniae serotypes isolated from invasive and sterile-site infections according to age^a

Serotypeb	No. (%) of strains from subjects of age (yr):			Total
	<5	5–64	>64
1*+	9 (13)	23 (17.8)	3 (6.1)	35
2*				0
3*+		12 (9.3)	7 (14.3)	19
4*+	1 (1.4)	1 (0.7)		2
5*+	8 (11.6)	12 (9.3)	2 (4.1)	22
6A	5 (7.2)	2 (1.5)	2 (4.1)	9
6B*+	7 (10.1)	3 (2.2)	2 (4.1)	12
7A		1 (0.7)		1
7C				0
7F*+	1 (1.4)	5 (3.8)	5 (10.2)	11
8*		6 (4.6)		6
9A	1 (1.4)			1
9N*		3 (2.0)	2 (4.1)	5
9F				0
9V*	1 (1.4)	1 (0.7)		2
10A*	1 (1.4)	3 (2.2)		4
10B			1 (2.0)	1
11A*		3 (2.2)		3
11F		1 (0.7)		1
12F*	2 (2.9)	4 (3.0)	1 (2.0)	7
13		5 (3.8)		5
14*+	4 (5.7)	5 (3.8)		9
15B*	1 (1.4)	1 (0.7)	1 (2.0)	3
15C	2 (2.9)	3 (2.2)	2 (4.1)	7
16		4 (3.1)		4
17F*		2 (1.4)		2
18A	1 (1.4)	1 (0.7)		2
18C*	2 (2.9)		1 (2.0)	3
18F		2 (1.4)	1 (2.0)	3
19A*	1 (1.4)	3 (2.2)	2 (4.1)	6
19F*+	6 (8.7)	6 (4.5)	3 (6.1)	15
20*		2 (1.4)		2
21	1 (1.4)			1
22F			1 (2.0)	1
23B		1 (0.7)		1
23C		1 (0.7)		1
23F*+	7 (10.1)	4 (3.0)	2 (4.1)	13
24F		1 (0.7)		1
27			1 (2.0)	1
28A				0
28F	1 (1.4)			1
29		1 (0.7)	1 (2.0)	2
31	1 (1.4)			1
33				0
33F*	3 (4.3)			3
34	1 (1.4)			1
35A		3 (2.2)	1 (2.0)	4
35B		2 (1.5)	2 (4.1)	4
35F	2 (2.9)		2 (4.1)	4
36		1 (0.7)	1 (2.0)	2
38		1 (0.7)	3 (6.1)	4
Total	69	129	49	247

^aAll pneumococcal serotypes included in the 23-valent polysaccharide vaccine are included. Of the vaccine serotypes, only serotype 2 was never identified in our patient population. Isolation of serotypes took place from February 1994 to September 1999. 

^b*, serotype in the 23-valent pneumoccal polysaccharide vaccine; +, serotype in the II-valent pneumococcal conjugate vaccine.