Table 4.
Minimun inhibitory concentrations (μg/mL) of 13 antibiotics each tested against Salmonella species isolated
| Antibiotics used (break-point for resistance) | Typhoidal Salmonellae (n=32) |
Non-typhoidal Salmonellae (n=45) |
||||
|---|---|---|---|---|---|---|
| Range | MIC50 | MIC90 | Range | MIC50 | MIC90 | |
| Ampicillin (>32) | 64–128 | 64.0 | 128.0 | 64–128 | 64.0 | 64.0 |
| Co-trimoxazole (>32) | 0.25–64 | 16.0 | 64.0 | 0.25–64 | 16 | 64.0 |
| Chloramphenicol (>16) | 1–64 | 64.0 | 64.0 | 0.25–64 | 32 | 32 |
| Gentamicin (>8) | 4–64 | 1.0 | 32.0 | 0.25–16 | 16 | 16 |
| Tetracycline (>8) | 4–128 | 64.0 | 128.0 | 1–64 | 16 | 32 |
| Streptomycin (>32) | 1–128 | 64.0 | 128.0 | 1–128 | 64 | 64 |
| Cefotaxime (>64) | 32–64 | 64.0 | 64 | 16–64 | 64 | 64 |
| Nalidixic acid (>8) | 1–64 | 8.0 | 16.0 | 1–32 | 8.0 | 16 |
| Ciprofloxacin (>4) | 0.003–1 | 0.015 | 0.03 | 0.003–1 | 0.015 | 0.03 |
| Ofloxacin (>8) | 0.003–1 | 0.015 | 0.03 | 0.003–1 | 0.015 | 0.03 |
| Colinstin sulphate (>8) | 1–128 | 32.0 | 64.0 | 1–64 | 32 | 32 |
| Amoxicillin (>32) | 1–32 | 32.0 | 32.0 | 1–32 | 32 | 32 |
| Cefoperazone (>64) | 4–64 | 64.0 | 64.0 | 1–64 | 64 | 64 |