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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.