Table 3. Distribution of antibiotic resistance phenotypic patterns of E. coli isolates.
| Resistance pattern | Phenotypic resistance | Number of resistant E. coli isolates | |
|---|---|---|---|
| Water samples (n = 51) | Milk samples (n = 26) | ||
| I | AMC | 1 (1.9%) | 0 (0%) |
| II | AMC, AMP, CAR | 2 (3.9%) | 0 (0%) |
| III | AMC, AMP, CAR, IPM | 1 (1.9%) | 0 (0%) |
| IV | AMP | 3 (5.8%) | 2 (7.6%) |
| V | AMP, CAR | 26 (50.9%) | 0 (0%) |
| VI | AMP, CAR, CAZ, CN, CRO, CTX, CXM | 2 (3.9%) | 0 (0%) |
| VII | AMP, CAR, CAZ, CN, CRO, CTX, CXM, FEP | 0 (0%) | 6 (23.0%) |
| VIII | AMP, CAR, CAZ, CN, CRO, CTX, CXM, FEP, SCF | 0 (0%) | 1 (3.8%) |
| IX | AMP, CAR, CAZ, CN, CRO, CTX, CXM, FEP, SXT | 1 (1.9%) | 0 (0%) |
| X | AMP, CAR, CAZ, CN, CRO, CTX, CXM, SXT | 1 (1.9%) | 0 (0%) |
| XI | AMP, CAR, CIP, CN, CRO, CTX, CXM, FEP, SXT | 1 (1.9%) | 0 (0%) |
| XII | AMP, CAR, CIP, NOR | 0 (0%) | 7 (26.9%) |
| XIII | AMP, CAR, CIP, NOR, SXT | 1 (1.9%) | 0 (0%) |
| XIV | AMP, CAR, CN, CRO, CTX, CXM, SXT | 1 (1.9%) | 0 (0%) |
| XV | AMP, CAR, NOR | 1 (1.9%) | 0 (0%) |
| XVI | AMP, CAR, SXT | 6 (11.7%) | 7 (26.9%) |
| XVII | AMP, CAZ, CRO, CTX, CXM | 0 (0%) | 1 (3.8%) |
| XVIII | CN | 1 (1.9%) | 0 (0%) |
| XIX | NOR | 1 (1.9%) | 1 (3.8%) |
| XX | SXT | 1 (1.9%) | 1 (3.8%) |
| XXI | TZP | 1 (1.9%) | 0 (0%) |
Notes.
- AMP
- ampicillin
- TZP
- piperacillin
- CAR
- carbenicillin
- AMC
- amoxicillin–clavulanic acid
- FEP
- cefepime
- CTX
- cefotaxime
- CRO
- ceftriaxone
- CAZ
- ceftazidime
- SCF
- cefoperazone
- CXM
- cefuroxime
- IPM
- imipenem
- MEM
- meropenem
- CN
- gentamicin
- AK
- amikacin
- TGC
- tigecycline
- CIP
- ciprofloxacin
- NOR
- norfloxacin
- SXT
- trimethoprim–sulfamethoxazole