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Table 1 Ten most common Finnish epidemic MRSA strains analyzed by PFGE (one per person) 1997–2004.

From: Nationwide trends in molecular epidemiology of methicillin-resistant Staphylococcus aureus, Finland, 1997–2004

aMRSA strain

Sequence type (ST) and SCCmec type

1997

1998

1999

2000

2001

2002

2003

2004

Overall

No. of hospital districts in which the strain found (total n = 20)

FIN-16

ST125:IA

1

2

6

3

21

103

231

375

742

15

FIN-4

ST375:IV

33

39

46

65

93

72

94

183

625

20

FIN-21

ST228:I

0

0

0

0

0

32

118

431

581

3

FIN-7

ST8:IV

4

12

12

10

41

145

83

188

495

16

FIN-10

ST45:IV, V

15

16

16

48

28

69

146

110

448

17

FIN-3

ST5:II

25

21

8

4

9

16

46

44

173

14

FIN-15

ST8:IV

0

0

0

25

9

27

32

33

126

7

FIN-12

ST22:IV

2

9

3

13

14

22

22

27

112

16

bFIN-2

ST241:IIIB

0

6

44

8

4

3

2

5

72

7

FIN-6

ST36:II

18

14

7

6

11

7

1

1

65

11

Other strains

 

27

59

53

35

61

58

59

85

437

20

Sporadic

 

12

19

17

32

33

25

31

46

215

19

Total

 

137

197

212

249

324

579

865

1528

4091

 
  1. aMRSA strains include related patterns with a 1–6 band differences.
  2. bThis represents only FIN-2e subtype.