| Gene name | Sequence | Annealing temperature | References | |
| stx1 | Fw | 5'… ATAAATCGCCATTCGTTGACTAC | 58˚C | This study |
| Rv | 5'…AGAACGCCCACTGAGATCATC | |||
| stx2 | Fw | 5'…GGCACTGTCTGAAACTGCTCC | 58˚C | This study |
| Rv | 5'…TCGCCAGTTATCTGACATTCTG | |||
| eaeA | Fw | 5'… GACCCGGCACAAGCATAAGC | 60˚C | This study |
| Rv | 5'…CCACCTGCAGCAACAAGAGG | |||
| astA | Fw | 5'... GCCATCAACACAGTATATCC | 58˚C | This study |
| Rv | 5'... GAGTGACGGCTTTGTAGTCC | |||