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Number of isolates for Shiga-toxins and other virulence factors genes detected by PCR.
| Sampling Region | Gene | |||||
|---|---|---|---|---|---|---|
| hlyA | eaeA | stx1 | stx2 | stx1/stx2 | stx2a | |
| Koster dairy n = 20 | 11 | 4 | 7 | 12 | 3 | 0 |
| Vryburg beef n = 10 | 3 | 0 | 1 | 6 | 1 | 0 |
| Rooigrond dairy n = 22 | 14 | 4 | 1 | 18 | 1 | 2 |
| Rooigrond beef n = 28 | 24 | 4 | 11 | 24 | 11 | 9 |
| % isolates positive for each gene/both | 65 | 15 | 25 | 75 | 20 | 13.8 |
n = number of isolates.
