Table 4.
Multidrug-resistant E. coli isolates (resistant to ≥ 3 antimicrobial classes).
| No. of Antimicrobial Classes Resistant to | Resistance Pattern | Year | Animal Food Type |
|---|---|---|---|
| 3 | AMP-STR-TET | 2006 | Cattle feed |
| 2010 | Ingredient | ||
| FIS-STR-TET | 2010 | Ingredient | |
| FIS-[KAN-STR]-TET | 2007 | Pet food | |
| 2010 | Cattle feed | ||
| 4 | AMC-AMP-FOX-STR | 2006 | Pet food |
| AMP-[COT-FIS]-STR-TET | 2010 | Animal feed (for unspecified animal species) | |
| 2010 | Animal feed (for unspecified animal species) |
Antimicrobials in brackets belong to the same antimicrobial classes. Abbreviations for antimicrobials are: AMC, amoxicillin-clavulanic acid; AMP, ampicillin; COT, trimethoprim-sulfamethoxazole; FIS, sulfisoxazole; FOX, cefoxitin; KAN, kanamycin; STR, streptomycin; and TET, tetracycline.