Table 1. Antibiotic resistance rates of S. aureus isolated from residents in 7 NHs in Shanghai.
| Antibiotic | Resistance rates (%) | ||
|---|---|---|---|
| Nasal (n = 90) | Axillary (n = 29) | Skin (n = 22) | |
| Penicillin | 88.9 | 93.1 | 86.4 |
| Oxacillin | 45.6 | 51.7 | 54.5 |
| Gentamicin | 3.3 | 24.1 | 13.6 |
| Kanamycin | 35.6 | 48.3 | 36.4 |
| Tobramycin | 36.7 | 37.9 | 40.9 |
| Erythromycin | 43.3 | 41.4 | 31.8 |
| Tetracycline | 30 | 24.1 | 4.5 |
| Minocycline | 7.8 | 20.7 | 0 |
| Ciprofloxacin | 33.3 | 44.8 | 27.3 |
| Clindamycin a | 21.1 | 24.1 | 0 |
| Sulfamethoxazole-trimethoprim | 1.1 | 0 | 0 |
| Chloramphenicol | 2.2 | 3.4 | 0 |
| Fusidic acid | 3.3 | 0 | 0 |
| Mupirocin (5μg) | 7.8 | 17.2 | 27.3 |
| Mupirocin (200μg) | 7.8 | 17.2 | 27.3 |
a 41 isolates (25 from nasal carriers; 9 from axillary carriers; 7 from skin carriers) were D-test positive, indicating inducible clindamycin resistance.