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Summary of PCR toxin profiling results
| Toxin profilea | No. (%) of environmental isolates | No. (%) of clinical isolates |
|---|---|---|
| tlh+ | 87 | 72 |
| tdh+/Δtrh | 0 | 7 (9.7) |
| Δtdh/trh+ | 5 (5.8) | 5 (6.9) |
| tdh+/trh+ | 0 | 56 (77.8) |
| Δtdh/Δtrh | 82 (94.2) | 4 (5.6) |
All of the environmental and clinical isolates were tlh positive.
