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Antibiotic combination | Number of resistant isolates | % | Observation |
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Ampicillin and tetracycline | 1 | 1.3 | Resistant to two antibiotics |
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Ampicillin, tetracycline, chloramphenicol, and ceftazidime | 3 | 3.9 | Resistant to four antibiotics |
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Ampicillin, ceftazidime, chloramphenicol, and norfloxacin | 3 | 3.9 | Resistant to four antibiotics |
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Ampicillin, chloramphenicol, cefotaxime, and sulfamethoxazole | 3 | 3.9 | Resistant to four antibiotics |
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Ampicillin, streptomycin, gentamicin, tetracycline, and cefotaxime | 9 | 11.7 | Resistant to five antibiotics |
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Ampicillin, streptomycin, tetracycline, cefotaxime, nalidixic acid, ceftazidime, norfloxacin, and ciprofloxacin | 35 | 45.5 | Resistant to six antibiotics |
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