Table 5 Numbers and profiles of antibiotic resistance (AMR) of E. coli O157:H7 isolated from feces collected in Alberta, Canada in 2007 and number of isolates susceptible to all antibiotics (SUS) by feedlot and pen for super-shedders (SS) x and low-shedders (LS) y of E. coli O157:H7
Feedlot | Pen | No. of resistant SS isolates (%) | Resistance toz | No. of resistant LS isolates (%) | Resistance to | Total No. SUS |
|---|---|---|---|---|---|---|
A | 1 | 0 (0) | ND | 2 (12) | tetracycline, sulfasoxazole, neomycin, streptomycin , tetracycline | 19 |
| Â | 2 | 1 (3) | ampicillin, sulfasoxazole, streptomycin, tetracycline | 2 (6) | tetracycline, sulfasoxazole, streptomycin, sulfamethoxazole/trimethroprim | 71 |
| Â | 3 | 0 (0) | ND | 1(4) | tetracycline | 35 |
| Â | 4 | 2 (11) | ceftazidime, streptomycin, sulfasoxazole, sulfamethoxazole/trimethro-prim | 2(9) | tetracycline, tetracycline, streptomycin | 41 |
| Â | 5 | 0 (0) | ND | 1 (3) | sulfasoxazole, streptomycin, tetracycline | 46 |
| Â | 6 | 0 (0) | ND | 1(3) | tetracycline | 34 |
| Â | 7 | 0 (0) | ND | 0 (0) | ND | 1 |
B | 1 | 0 (0) | ND | 3 (6) | tetracycline | 78 |
| Â | 2 | 0 (0) | ND | 0 (0) | ND | 94 |
| Â | 3 | 0 (0) | ND | 1(6) | tetracycline | 26 |
| Â | 4 | 0 (0) | ND | 1(9) | tetracyline | 12 |
Total | Â | 3 (2) | Â | 14 (5) | Â | 457 |