Table 1.
Resistance to non-beta-lactam antibiotics among MRSA isolated from companion animals.
| Antibiotics | Total of MRSA isolates (n = 130) |
MRSA isolates belonging to human-related clonesa (n = 46) |
MRSA isolates belonging to CC398 clones (n = 64) |
|||
|---|---|---|---|---|---|---|
| Number of resistant isolates | Percentage of resistant isolates | Number of resistant isolates | Percentage of resistant isolates | Number of resistant isolates | Percentage of resistant isolates | |
| Kanamycin | 91 | 70.0 | 27 | 58.7 | 52 | 81.3 |
| Tobramycin | 88 | 67.7 | 30 | 65.2 | 54 | 84.4 |
| Gentamicin | 65 | 50.0 | 2 | 4.3 | 51 | 79.7 |
| Chloramphenicol | 27 | 20.8 | 3 | 6.5 | 14 | 21.9 |
| Florfenicol | 6 | 4.6 | 0 | 0.0 | 6 | 9.4 |
| Tetracycline | 78 | 60.0 | 5 | 10.9 | 61 | 95.3 |
| Erythromycin | 43 | 33.1 | 23 | 50.0 | 7 | 10.9 |
| Spiramycin | 21 | 16.2 | 14 | 30.4 | 7 | 10.9 |
| Lincomycin | 23 | 17.7 | 14 | 30.4 | 8 | 12.5 |
| Fusidic acid | 7 | 5.4 | 5 | 10.9 | 0 | 0.0 |
| Enrofloxacin | 63 | 48.5 | 41 | 89.1 | 21 | 32.8 |
aStrains considered as human-related MRSA clones are listed in Supplementary Table S2 (underlined strain numbers).