Table 1.
The phenotypic drug resistance spectrum of Escherichia coli strains.
| Antibiotic classes | Phenotypic resistance spectrum | No. of antibiotics | No. of strains |
|---|---|---|---|
| Sulfonamides | SXT | 1 | 104 |
| Cephalosporin + Penicillin | CTX + AMP | 2 | 180 |
| Cephalosporin + Penicillin + Sulfonamides | CTX + AMP + SXT | 3 | 142 |
| Cephalosporin + Penicillin + Sulfonamides + Quinolones | CTX + AMP + SXT + CIP | 4 | 46 |
| Cephalosporin + Tetracycline + Sulfonamides + Quinolones | CTX + TET + SXT + CIP | 4 | 40 |
| Cephalosporin + Penicillin + Sulfonamides + Quinolones + Aminoglycosides | CTX + AMP + SXT + CIP + GEN | 5 | 22 |
| Cephalosporin + Penicillin + Sulfonamides + Quinolones + Tetracycline + Amphenicol | CTX + AMP + SXT + CIP + TET + FFC | 6 | 22 |
| Penicillin + Cephalosporin + Aminoglycoside + Tetracycline + Sulfonamides + Amphenicol + Phosphonic | AMP + CTX + GEN + TET + SXT + FFC + FOS | 7 | 5 |
| Penicillin + Cephalosporin + Quinolones + Aminoglycoside + Tetracycline + Sulfonamides + Amphenicol | AMP + CTX + CIP + GEN + TET + SXT + FFC | 7 | 4 |
| Penicillin + Cephalosporin + Quinolones + Aminoglycosides + Tetracycline + Sulfonamides + Amphenicol | AMP + CTX + CIP + AMK + GEN + TET + SXT + FFC | 8 | 2 |
AMP, ampicillin; CTX, cefotaxime; CIP, ciprofloxacin; GEN, gentamicin; TET, tetracycline; TIG, tigecycline; SXT, trimethoprim/sulfamethoxazole; FFC, florfenicol; AMK, Amikacin.