Table 2.
Most common resistance patterns among 1161 canine E. coli isolates that were tested for susceptibility to all antimicrobial agents used in this study, 2004–2011
| Resistance patterna | Number of isolates | % of isolates |
|---|---|---|
| Pan-susceptible | 606 | 52.2 |
| AUG-AMP-FAZ-FOX-CEP-ENRO-GEN-TET-SXT | 47 | 4.0 |
| AMP | 45 | 3.9 |
| AUG-AMP-FAZ-FOX-CEP-CHL-ENRO-GEN-TET-SXT | 37 | 3.2 |
| TET | 28 | 2.4 |
| AUG-AMP-FAZ-FOX-CEP-CHL-ENRO-TET-SXT | 25 | 2.2 |
| AUG-AMP-FAZ-FOX-CEP | 21 | 1.8 |
| AMP-TET-SXT | 20 | 1.7 |
| AMP-ENRO-GEN-TET-SXT | 14 | 1.2 |
| AUG-AMP-FAZ-FOX-CEP-ENRO-TET | 13 | 1.1 |
| AUG-AMP-FAZ-FOX-CEP-ENRO-TET-SXT | 11 | 0.9 |
| AMP-ENRO-TET-SXT | 11 | 0.9 |
a
AUG — amoxicillin/clavulanic acid; AMP — ampicillin; FAZ — cefazolin; FOX — cefoxitin; CEP — cephalothin; CHL — chloramphenicol; ENRO — enrofloxacin; GEN — gentamicin; TET — tetracycline; SXT — trimethoprim/sulfamethoxazole.