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Volume 12, Number 2—February 2006

Research

Methicillin-resistant Staphylococcus aureus Clones, Western Australia

Geoffrey W. Coombs*†, Julie C. Pearson*, Frances G. O'Brien†, Ronan J. Murray*, Warren B. Grubb†, and Keryn J. Christiansen*†Comments to Author 
Author affiliations: *Royal Perth Hospital, Perth, Western Australia, Australia; †Curtin University of Technology, Bentley, Western Australia, Australia

Main Article

Table 2

Characteristics of community MRSA clones* (of 4,099 total MRSA isolates), Western Australia, July 1, 2003–December 31, 2004

Clone CHEF pattern (pulsotypes) n (% of total MRSA) CC Urease Coagulase PCR RFLP pattern PVL toxin
ST1-MRSA-IV WA MRSA-1 1,757 (42.86) 1 Pos 20 Neg
ST129-MRSA-IV WA MRSA-2 947 (23.10) 78 Pos 258 Neg
ST5-MRSA-IV WA MRSA-3 273 (6.66) 5 Pos 36 Neg
ST45-MRSA-V WA MRSA-4 60 (1.46) 45 Pos DNC Neg
ST8-MRSA-IV WA MRSA-5 27 (0.66) 8 Pos 18 Neg
WA MRSA-12 4 (0.1) 8 Pos 18 Pos
ST93-MRSA-IV WA MRSA-7 34 (0.83) S Pos 32 Pos
ST75-MRSA-IV WA MRSA-8 9 (0.22) S Pos DNA Neg
ST59-MRSA-V WA MRSA-9 3 (0.07) 59 Pos 40 Pos
ST573-MRSA-V WA MRSA-10 2 (0.05) 1 Pos 34 Neg
ST5-MRSA-V WA MRSA-11 11 (0.27) 5 Pos 34 Neg
WA MRSA-14 4 (0.09) 5 Pos 40 Neg
ST584-MRSA-IV WA MRSA-13 1 (0.2) 9 Pos 32 Neg
ST59-MRSA-IV WA MRSA-15 3 (0.07) 59 Pos 40 Neg
ST8-MRSA-Novel WA MRSA-16 1 (0.2) 8 Neg 18 Neg
ST583-MRSA-IV WA MRSA-17 2 (0.5) 80 Pos DNC Pos
ST5-MRSA-Novel WA MRSA-18 1 (0.02) 5 Pos 36 Neg
ST609-MRSA-IV WA MRSA-19 1 (0.02) 8 Neg 18 Neg
ST5-MRSA-Novel WA MRSA-21 2 (0.5) 5 Pos 34 Neg
ST577-MRSA-V WA MRSA-22 3 (0.07) 121 Pos 42 Neg
ST45-MRSA-IV WA MRSA-23 1 (0.02) 45 Neg 22 Neg
ST87-MRSA-IV WA MRSA-24 1 (0.02) 59 Pos 40 Neg
ST575-MRSA-IV WA MRSA-25 1 (0.02) 5 Pos 256 Neg
ST30-MRSA-IV WSPP MRSA 30 (0.73) 30 Pos 24 Pos
Total 3,178 (77.53)

*MRSA, methicillin-resistant Staphylococcus aureus; CHEF, contour-clamped homogeneous electric field; CC, clonal complex; PCR, polymerase chain reaction; RFLP, restriction fragment length polymorphisms; PVL, Panton-Valentine leukocidin; WA MRSA, Western Australia MRSA; DNC, did not cut; S, singleton; DNA, did not amplify; WSPP MRSA, Western Samoan phage pattern MRSA.

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