Research Article
Characteristics of Escherichia coli Isolated from Bovine Mastitis Exposed to Subminimum Inhibitory Concentrations of Cefalotin or Ceftazidime
Table 3
Antimicrobial susceptibility profiles of the Escherichia coli isolates recovered after induction with cefalotin.
| ā | Resistant E. coli isolates | Antimicrobial | Derived from E4 | Derived from E11 | Derived from E21 |
| Cefoxitin | CF-3/-4/-5/-6/-7/-8/-9 | CF-5/-6/-7/-8/-9 | CF-5/-6/-7/-8/-9 | Ceftazidime | CF-5/-6/-7/-8/-9 | CF-5/-6/-7/-8/-9 | CF-7/-8/-9 | Ampicillin | CF-4/-5/-6/-7/-8/-9 | CF-3/-4/-5/-6/-7/-8/-9 | CF-6/-7/-8/-9 | Amoxicillin/clavulanic acid | CF-4/-5/-6/-7/-8/-9 | CF-4/-5/-6/-7/-8/-9 | CF-6/-7/-8/-9 | Kanamycin | CF-4/-5/-6/-7/-8/-9 | CF-7/-8/-9 | CF-6/-7/-8/-9 |
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All E. coli isolates had intermediate resistance to cefoxitin, ceftazidime, and kanamycin. |