TABLE 1.
Susceptibility of 516 recent clinical S. aureus isolates to four antibiotics
| S. aureus strains (no.) and antimicrobial agent | MIC (μg/ml)
|
% of strains susceptiblea | ||
|---|---|---|---|---|
| Range | For 50% of strains | For 90% of strains | ||
| Methicillin resistant (199) | ||||
| Quinupristin-dalfopristin | ≤0.12–2.0 | 1.0 | 1.0 | 94.0 |
| Erythromycin | ≤0.12–>16 | >16 | >16 | 7.0 |
| Clindamycin | ≤0.12–>16 | >16 | >16 | 13.1 |
| Methicillin susceptible (317) | ||||
| Quinupristin-dalfopristin | ≤0.12–2.0 | 0.5 | 0.5 | 99.1 |
| Erythromycin | ≤0.12–>16 | 0.5 | >16 | 79.2 |
| Clindamycin | ≤0.12–>16 | ≤0.12 | 0.25 | 96.2 |
a
Susceptible to erythromycin and clindamycin at ≤0.5 μg/ml and quinupristin-dalfopristin at ≤1.0 μg/ml.