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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*†
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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