TABLE 1.
E. coli serotypes tested with the O157 rfb PCR
| Serotype or species | No. of strains tested |
|---|---|
| O157:H7 and H− | 39a |
| O55:H7 | 7 |
| O26:H−; H2; H11 | 4 |
| O111:H− | 2 |
| O6:H10 | 1 |
| O85:H− | 1 |
| O103:H2 | 1 |
| O103:H6 | 1 |
| Untyped animal STEC | 4 |
| Vibrio cholerae | 1 |
| Staphylococcus aureus | 1 |
| Citrobacter freundii | 1 |
| Brucella abortus | 1 |
| Yersinia enterocolitica (serotype O9) | 1 |
| Salmonella Angoda (group N) | 1 |
a
Note that for O157:H7 and O157:H−, all 39 strains tested had a positive PCR result. None of the other strains of the serotypes listed had a positive PCR result.