Table 2.
Antibiotic resistance of Salmonella isolates from retail meats in Guangdong, China.
| Antibiotic | Number of resistant isolates (%) from: |
||
|---|---|---|---|
| Chicken (n = 302) | Pork (n = 313) | Total (n = 615) | |
| β-lactams | |||
| Ampicillin | 96 (31.8) | 199 (63.6) | 295 (48.0) |
| Amoxicillin/clavulanic acid | 4 (1.3) | 3 (1.0) | 7 (1.1) |
| Cefotaxime | 30 (9.9) | 10 (3.2) | 40 (6.5) |
| Ceftazidime | 10 (3.3) | 4 (1.3) | 14 (2.3) |
| Cefepime | 8 (2.6) | 9 (2.9) | 17 (2.8) |
| Aminoglycosides | |||
| Gentamicin | 34 (11.3) | 66 (21.1) | 100 (16.3) |
| Streptomycin | 84 (27.8) | 127 (40.6) | 211 (34.3) |
| Amikacin | 6 (2.0) | 2 (0.6) | 8 (1.3) |
| Sulfonamides | |||
| Trimethoprim/sulfamethoxazole | 103 (34.1) | 145 (46.3) | 248 (40.3) |
| Sulfisoxazole | 212 (70.2) | 256 (81.8) | 468 (76.1) |
| Quinolones | |||
| Nalidixic acid | 112 (37.1) | 65 (20.8) | 177 (28.8) |
| Ofloxacin | 192 (63.6) | 83 (26.5) | 275 (44.7) |
| Ciprofloxacin | 37 (12.3) | 37 (11.8) | 74 (12.0) |
| Phenicols | |||
| Florfenicol | 142 (47.0) | 96 (30.7) | 238 (38.7) |
| Chloramphenicol | 146 (48.3) | 99 (31.6) | 245 (39.8) |
| Carbapenems | |||
| Imipenem | 0 | 3 (1.0) | 3 (0.5) |
| Polymyxins | |||
| Polymyxin B | 7 (2.3) | 5 (1.6) | 12 (2.0) |
| Tetracyclines | |||
| Tetracycline | 216 (71.5) | 247 (78.9) | 463 (75.3) |