Table 6.
Antimicrobial resistance patterns of the tested APEC isolates against 14 antimicrobial agents.
| Resistance pattern | Antimicrobial class | No. of antimicrobial class | No. of resistant isolates | Percentage |
|---|---|---|---|---|
| AUG2, AMP, FOX, AXO, GEN, STR, FIS, TET | β-Lactam combination agents, penicillins, cephems, aminoglycosides, folate pathway antagonists, tetracyclines | 6 | 8 | 21.6% |
| AMP, STR, TET, FIS, SXT | Penicillins, aminoglycosides, tetracyclines, folate pathway antagonists | 4 | 2 | 5.4% |
| GEN, TET, SXT | Aminoglycosides, tetracyclines, folate pathway antagonists | 3 | 4 | 10.8% |
| AMP, TET | Penicillins, tetracyclines | 2 | 4 | 10.8% |
| AMP, GEN | Penicillins, aminoglycosides | 2 | 2 | 5.4% |
| GEN, TET | Aminoglycosides, tetracyclines | 2 | 2 | 5.4% |
| GEN, STR, FIS | Aminoglycosides, folate pathway antagonists | 2 | 1 | 2.7% |
| TET | Tetracyclines | 1 | 3 | 8.1% |
| None | None | 0 | 11 | 29.7% |
Abbreviations: AMP, ampicillin; APEC, avian pathogenic Escherichia coli; AUG2, amoxicillin/clavulanic acid; AXO, ceftriaxone; FIS, sulfisoxazole; FOX, cefoxitin; GEN, gentamicin; STR, streptomycin; SXT, trimethoprim/sulfamethoxazole; TET, tetracycline.