Table 4.
Detection of a 93-kb inversion in isolates associated with the Walkerton outbreak investigation
| Isolate characterization | Detection of 93 kb inversion using PCR primers | |||
|---|---|---|---|---|
| Total isolates | Non-inversion | Inversion | No PCR product | |
| Walkerton human, CC ST-21 | 110 | 3 (3%) | 107 (97%) | 0 |
| Walkerton human, not CC ST-21 | 14 | 14 (100%) | 0 | 0 |
| Walkerton bovine, CC ST-21 | 22 | 0 | 22 (100%) | 0 |
| Walkerton bovine, not CC ST-21 | 20 | 15 (75%) | 1 (5%) | 4 (20%) |
| Non-Walkerton human, CC ST-21 | 10 | 8 (80%) | 1 (10%) | 1 (10%) |
| Non-Walkerton human, not CC ST-21 | 4 | 3 (75%) | 0 | 1 (25%) |
| Non-Walkerton animal, CC ST-21 | 5 | 3 (60%) | 1 (20%) | 1 (20%) |
| Non-Walkerton animal, not CC ST-21 (C. coli) | 8 | 0 | 0 | 8 (100%) |
| Total | 193 | 46 | 132 | 15 |