Table 5.
Detection of two PCR products from the pTet plasmid in Walkerton outbreak investigation strains
| Isolate characterization | Detection of virulence plasmid PCR products | ||||
|---|---|---|---|---|---|
| Total isolates | Both PCR products | cpp50tetO | virB4rcvap | No plasmid | |
| Walkerton human, CC ST-21 | 110 | 16 (15%) | 0 | 3 (3%) | 91 (83%) |
| Walkerton human, not CC ST-21 | 14 | 1 (7%) | 2 (14%) | 2 (14%) | 9 (64%) |
| Walkerton bovine, CC ST-21 | 22 | 14 (64%) | 0 | 3 (14%) | 5 (23%) |
| Walkerton bovine, not CC ST-21 | 20 | 2 (10%) | 0 | 1 (5%) | 17 (85%) |
| Non-Walkerton human, CC ST-21 | 10 | 9 (90%) | 0 | 1 (10%) | 0 |
| Non-Walkerton human, not CC ST-21 | 4 | 0 | 0 | 0 | 4 (100%) |
| Non-Walkerton animal, CC ST-21 | 5 | 2 (40%) | 0 | 0 | 3 (60%) |
| Non-Walkerton animal, non CC ST-21 | 8 | 4 (50%) | 0 | 0 | 4 (50%) |
| C. coli | |||||
| Total | 193 | 48 | 2 | 10 | 133 |