Table 1.
Major STEC clusters identified in identification dataset.
| Cluster | No. of isolates | No. of serotypes | No. of STs | Top 28 non-O157:H7 serotypes* |
|---|---|---|---|---|
| O157:H7 | 356 | 1 | 83 | O157:H7 |
| C1 | 414 | 30 | 97 | 1-O26:H11, 3-O111:H8, 8-O118/O151:H16, |
| 12-O71:H11, 15-O103:H11, 18-O69:H11 | ||||
| C2 | 181 | 16 | 42 | 2-O103:H2, 6-O45:H2, 9-O123/O186:H2 |
| 11-O118/O151:H2 | ||||
| C3 | 45 | 18 | 12 | 19-O103:H25, 25-O156:H25, 6-O45:H2 |
| C4 | 89 | 14 | 21 | 13-O5:H9, 20-O165:H25, 24-O177:H25 |
| C5 | 29 | 1 | 5 | 4-O121:H19 |
| C6 | 41 | 1 | 6 | 5-O145:H28 |
| C7 | 40 | 2 | 13 | 7-O91:H14 |
| C8 | 40 | 1 | 14 | 10-O146:H21 |
| C9 | 4 | 1 | 1 | 10-O146:H21 |
| C10 | 50 | 2 | 15 | 14-O128ab:H2 |
| C11 | 27 | 1 | 6 | 16-O117:H7 |
| C12 | 21 | 1 | 6 | 17-O76:H19 |
| C13 | 10 | 1 | 7 | 21-O113:H21 |
| C14 | 16 | 2 | 2 | 22-O113:H4 |
| C15 | 5 | 1 | 1 | 23-O104:H4 |
| C16 | 14 | 1 | 4 | 26-O8:H19 |
| C17 | 24 | 11 | 7 | 27-O130:H11 |
| C18 | 6 | 1 | 1 | 28-O55:H7 |
*The serotypes in each non-O157:H7 cluster are listed with their rank by isolate frequency for the top 28 non-O157:H7 serotypes followed by the serotype.