TABLE 1.
Molecular characteristics of chart-confirmed CA-MRSA isolates
| Characteristic | No. of isolates positive/total no. (%)
|
|||
|---|---|---|---|---|
| 2004 | 2005 | 2006 | Total | |
| PVL | 15/16 (94) | 28/29 (97) | 30/34a (88) | 73/79 (92) |
| SCCmec type IV | 11/15 (73) | 28/28 (100) | 27/30 (90) | 66/73 (90) |
| USA 100 clone | 2/16 (13) | 1/29 (4) | 2/48 (4) | 5/93 (5) |
| USA 300 clone | 6/16 (38) | 24/29 (83) | 33/48 (69) | 63/93 (68) |
| USA 400 clone | 2/16 (13) | 2/29 (7) | 2/48 (4) | 6/93 (7) |
| Non-USA 100 to 800 | 6/16 (38) | 2/29 (7) | 11/48 (23) | 19/93 (20) |
a
The PVL assay was performed on 34 of 48 isolates confirmed as CA-MRSA in 2006.