TABLE 1.

Molecular characteristics of chart-confirmed CA-MRSA isolates

CharacteristicNo. of isolates positive/total no. (%)
200420052006Total
PVL15/16 (94)28/29 (97)30/34a (88)73/79 (92)
SCCmec type IV11/15 (73)28/28 (100)27/30 (90)66/73 (90)
USA 100 clone2/16 (13)1/29 (4)2/48 (4)5/93 (5)
USA 300 clone6/16 (38)24/29 (83)33/48 (69)63/93 (68)
USA 400 clone2/16 (13)2/29 (7)2/48 (4)6/93 (7)
Non-USA 100 to 8006/16 (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.