TABLE 1.
PFGE types and persistent clones among non-O157 STEC isolates
| Serogroup | No. of isolates | PFGE types (no. of isolates) | No. of types | Persistent clonesa (no. of types) | No. of clones |
|---|---|---|---|---|---|
| O146 | 50 | A1 (10), A2 (1), A3 (1), A4 (6), A5 (8), A6 (1), A7 (1), A8 (1), A9 (2), A10 (1), A11 (1), A12 (1), A13 (1), A14 (1), A15 (5), A16 (2), A17 (3), A18 (1), A19 (1), A20 (1), A21 (1) | 21 | AI (7), AII (2), AIII (1), AIV (1), AV (2) | 5 |
| O91 | 64 | B1 (9), B2 (2), B3 (1), B4 (1), B5 (2), B6 (1), B7 (1), B8 (2), B9 (1), B10 (1), B11 (1), B12 (2), B13 (1), B14 (1), B15 (1), B16 (1), B17 (4), B18 (2), B19 (4), B20 (4), B21 (1), B22 (1), B23 (1), B24 (3), B25 (1), B26 (1), B27 (1), B28 (3), B29 (1), B30 (2), B31 (1), B32 (3), B33 (1), B34 (1), B35 (1) | 35 | BI (4), BII (3), BIII (2), BIV (2), BV (3), BVI (2), BVII (4), BVIII (6) | 8 |
| O5 | 31 | C1 (7), C2 (2), C3 (1), C4 (1), C5 (1), C6 (1), C7 (4), C8 (1), C9 (2), C10 (1), C11 (1), C12 (1), C13 (2), C14 (1), C15 (1), C16 (1), C17 (1), C18 (1), C19 (1) | 19 | CI (6), CII (5), CIII (1) | 3 |
| Total | 145 | 75 | 16 |
a
Based on the criteria that isolates belong to the same serogroup and have PFGE patterns differing by three bands or fewer.