Table 1.
Serogroups, virulence factors and sequence types (STs) of the 91 STEC isolates
| ST | No. of isolates | Serogroup | Stx1 | Stx2 | eae | ehxA | saa |
|---|---|---|---|---|---|---|---|
| ST10 | 5 | O34 | + | + | – | + | – |
| O92 | – | + | – | – | – | ||
| O97 | – | + | – | + | – | ||
| O98 | + | + | – | – | + | ||
| O149 | – | + | – | + | – | ||
| ST26 | 2 | O69 | + | + | – | + | + |
| O100 | – | + | – | + | + | ||
| ST29 | 11 | O76 | + | + | – | + | + |
| O92 | + | + | + | – | – | ||
| O97 | + | + | – | + | – | ||
| O97 | + | + | – | + | – | ||
| O100 | + | + | – | + | + | ||
| O100 | + | – | – | + | + | ||
| O100 | + | + | – | + | – | ||
| O102 | – | + | + | – | – | ||
| O102 | – | + | + | – | – | ||
| O102 | + | + | – | + | – | ||
| Nontypable | + | + | – | + | – | ||
| ST101 | 7 | O26 | + | + | – | – | – |
| O97 | + | + | – | + | – | ||
| O100 | – | + | – | – | – | ||
| O100 | + | + | – | + | + | ||
| O100 | + | + | – | + | – | ||
| O102 | + | + | – | + | – | ||
| O149 | – | + | – | + | – | ||
| ST156 | 1 | O64 | + | + | – | + | – |
| ST297 | 29 | O5 | + | + | – | + | – |
| O6 | + | + | – | + | – | ||
| O21 | – | + | – | + | – | ||
| O22 | + | + | – | + | + | ||
| O26 | + | + | – | + | – | ||
| O26 | + | + | – | + | – | ||
| O26 | + | + | – | + | – | ||
| O26 | + | + | – | + | – | ||
| O39 | – | + | – | + | – | ||
| O54 | + | + | – | + | – | ||
| O55 | + | + | – | + | – | ||
| O75 | + | + | – | + | – | ||
| O91 | + | + | – | + | – | ||
| O91 | + | + | – | + | + | ||
| O97 | + | + | – | + | – | ||
| O97 | + | + | – | + | + | ||
| O97 | + | + | – | + | + | ||
| O97 | + | + | – | + | – | ||
| O97 | + | + | – | + | – | ||
| O97 | + | + | – | + | – | ||
| O97 | + | + | – | + | – | ||
| O100 | + | + | – | + | – | ||
| O100 | + | – | – | + | + | ||
| O100 | + | – | – | + | – | ||
| O100 | + | – | – | + | – | ||
| O145 | + | + | – | + | – | ||
| O149 | – | + | – | + | – | ||
| O173 | + | + | – | + | – | ||
| O173 | + | + | – | + | – | ||
| ST542 | 2 | O157 | + | + | + | + | – |
| O157 | + | + | + | + | – | ||
| ST602 | 13 | O34 | + | + | – | + | – |
| O34 | + | + | – | + | – | ||
| O55 | + | + | – | + | – | ||
| O75 | + | + | – | + | – | ||
| O91 | + | – | – | + | + | ||
| O91 | + | – | – | + | – | ||
| O91 | + | – | – | + | – | ||
| O91 | + | – | – | + | – | ||
| O91 | + | – | – | + | + | ||
| O97 | + | + | – | + | – | ||
| O118 | + | + | – | + | + | ||
| O149 | + | + | – | + | – | ||
| Nontypable | + | + | – | + | – | ||
| ST793 | 1 | O3 | – | + | + | – | – |
| ST813 | 4 | O34 | + | + | – | – | – |
| O92 | + | + | – | + | – | ||
| O97 | + | + | – | + | – | ||
| O100 | + | + | – | + | – | ||
| ST1294 | 8 | O91 | + | – | – | + | + |
| O100 | + | + | – | + | + | ||
| O110 | + | + | – | + | + | ||
| O149 | + | + | – | + | – | ||
| Nontypable | + | + | – | + | – | ||
| Nontypable | + | + | – | + | – | ||
| Autoagglutination | – | + | – | – | – | ||
| Autoagglutination | – | + | – | – | – | ||
| ST1623 | 6 | O42 | + | + | – | + | – |
| O54 | + | + | – | + | – | ||
| O78 | – | + | – | + | + | ||
| O92 | + | + | – | + | + | ||
| O92 | + | + | – | + | + | ||
| O149 | – | + | – | – | – | ||
| ST1721 | 2 | O9 | + | + | – | + | + |
| O167 | + | + | – | + | + |
“+”: Positive; “-”: Negative