TABLE 3.
Frequencies of stx types and stx combinations in STEC strains analyzed in this study
| stx gene(s)a | No. (%) of strains with indicated gene(s)b |
|---|---|
| stx1 | 6 (8.0) |
| stx1c | 1 (1.4) |
| stx1, stx2, and/or stx2d | 12 (16.7) |
| stx1c, stx2-O118 | 2 (2.8) |
| stx1, stx2-O118 | 1 (1.4) |
| stx2 and/or stx2d | 20 (27.8) |
| stx2 and/or stx2d, stx2-O118 | 2 (2.8) |
| stx2 and/or stx2d, stx2g | 2 (2.8) |
| stx2-O118 | 8 (11.1) |
| stx2e | 18 (25.0) |
a
“stx2 and/or stx2d” indicates the results of PCR with primers GK5/GK6.
b
Results for only 72 of 75 strains are included in this table, because TS10/08 has lost its stx gene, and the stx genes of TS14/08 and TS15/08 could not be subtyped. The percentages are rounded.