Table 5.
Minimum inhibitory concentrations (MICs) of some antibiotics against Gram-negative bacteria
| MIC50 and MIC90 of some antibiotics (µg/ml) | ||||||||
|---|---|---|---|---|---|---|---|---|
| E. coli O157:H7 | Y. enterocolitica O9 | Proteus spp | K. pneumoniae | |||||
| MIC50 | MIC90 | MIC50 | MIC90 | MIC50 | MIC90 | MIC50 | MIC90 | |
| Ciprofloxacin | 2 | 64 | 0.5 | NA | 2 | NA | 0.5 | NA |
| Levofloxacin | 4 | NA | 4 | NA | 4 | NA | 4 | NA |
| Ofloxacin | 4 | NA | 2 | 64 | 2 | NA | 4 | NA |
| Sparfloxacin | NA | NA | 32 | NA | 32 | NA | 32 | NA |
| Ceftazidime | 0.25 | NA | 0.25 | 64 | 4 | NA | 4 | NA |
| Ceftriaxone | 32 | NA | 32 | NA | 32 | NA | 0.25 | NA |
| Cefotaxime | 0.5 | NA | 8 | NA | 64 | NA | 0.25 | NA |