Skip to main content

Table 2 Background information on patients and staff members who tested positive for the ten most common epidemic MRSA strains, 2001–2003. The response rate of the survey was 97% (1707/1768).

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

MRSA strain Number of patients (n = 1598) Number of staff members (n = 109) Total no. of isolates
  Sequence type (ST) and SCCmec type Clinical specimen aScreening specimen; exposure to MRSA bScreening specimen; hospital contact abroad Other reason for taking the sample Clinical specimens cScreening specimen; epidemic situation dScreening specimen; hospital contact abroad Other reason for taking the sample  
FIN-16 ST125:IA 197 131 5 18 2 3 1 2 359
FIN-7 ST8:IV 70 159 1 6 - 28 - - 264
FIN-4 ST375:IV 163 56 5 12 4 8 - - 248
FIN-10 ST45:IV, V 87 129 2 6 2 12 - - 238
FIN-21 ST228:I 58 82 1 3 - 1 - - 145
FIN-3 ST5:II 22 30 8 7 - 4 - - 71
FIN-15 ST8:IV 34 19 - 5 - 9 - 1 68
FIN-12 ST22:IV 19 12 8 4 - 1 14 - 58
FIN-6 ST36:II 5 1 5 - - 1 1 - 13
eFIN-2 ST241:IIIB 7 - 2 - - - - - 9
Other strains   79 49 8 2 3 5 2 2 150
Sporadic   52 22 19 2 1 1 1 - 98
Total   793 690 64 65 12 73 19 5 f1721
  1. aScreening specimens of MRSA increased from 36% (96/265) in 2001 to 45% (364/816) in 2003.
  2. bHospitalized or undergone a surgical procedure outside the Nordic countries within 6 months
  3. cScreening specimens of MRSA increased from 46% (12/26) in 2001 to 82% (36/44) in 2002, but decreased to 64% (25/39) in 2003.
  4. dWorked outside the Nordic countries within 6 months
  5. eThis represents only FIN-2e subtype.
  6. fThe total number of strains (1721) exceeds the number of MRSA-positive persons (1707) by 14, because in some cases more than one reason for sampling was chosen in the questionnaire.