Characteristics of Methicillin-resistant Staphylococcus aureus Isolates from Patients with Purulent and Nonpurulent Skin and Soft Tissue Infections
| Characteristic | Purulent SSTI* (n = 262) | Nonpurulent SSTI* (n = 87) | P |
|---|---|---|---|
| Contains SCCmec IV | 253 (97) | 44 (51) | <.001 |
| Contains SCCmec II | 9 (3) | 41 (47) | <.001 |
| Positive for PVL genes | 245 (94) | 30 (34) | <.001 |
| Susceptibility to: | |||
| Clindamycin | 231 (88) | 38 (44) | <.001 |
| Ciprofloxacin | 237 (90) | 31 (36) | <.001 |
| Gentamicin | 261 (99) | 77 (89) | <.001 |
| Erythromycin | 19 (7) | 11 (13) | .1 |
| Rifampin | 260 (99) | 83 (95) | .04 |
| Trimethoprim-sulfamethoxazole† | 232 (100) | 31 (97) | .1 |
* Data provided as n (%).
† Two hundred thirty-two isolates from purulent SSTIs and 32 from nonpurulent SSTIs were tested for susceptibility to trimethoprim-sulfamethoxazole.
SSTI, skin and soft tissue infenction; PVL, Panton-Valentine leukocidin.