Table 3.

Prevalence of strain types represented more than five times and strain types belonging to the same clonal complex

Strain type	Prevalence (%)
	1975	1985	1995	Mean
ST-8 complex
B : P1.5-1,2-2 : F3-6 : ST-8 (cc8)	24			8.1
B : P1.19,15 : F3-9 : ST-8 (cc8)	3.3	1		1.4
23 other cc8 strain types	12	9	8	9.7
ST-41/44 complex
B : P1.7-2,4 : F1-5 : ST-41 (cc41/44)		3	6	3
40 other cc41/44 strain types	6.5	9	22	10
ST-11 complex
C : P1.5,2-1 : F5-5 : ST-11 (cc11)		6	2	2.7
C : P1.5,2 : F3-6 : ST-11 (cc11)			6	2
C : P1.5-1,10-4 : F3-6 : ST-11 (cc11)			6	2
21 other cc11 strain types	5.7	1	18	8.7
ST-32 complex
B : P1.19,15 : F5-1 : ST-33 (cc32)		6	1	2.3
B : P1.7,16-2 : F1-5 : ST-74 (cc32)		4	2	2
B : P1.7,16-2 : F1-5 : ST-343 (cc32)		5		1.7
15 other cc32 strain types	0.8	16	5	7.3
ST-1 complex
A : P1.5-2,10 : F5-1 : ST-1 (cc1)	4	1		2
5 other cc1 strain types	5.7	1		2.7
ST-334 complex
C : P1.5-1,2-2 : F1-5 : ST-334 (cc334)	3.3	1		1.7
23 other cc334 strain types	15.5	6		8.3
ST-269 complex
B : P1.19-1,15-11 : F5-1 : ST-269 (cc269)		3		1
13 other cc269 isolates	0.8	4	12	5.6
Total	82.1	76	88	82