Table 4.
Sequence types, serotypes, virulence genes in 75 STEC isolates and associated-clinical symptomsa.
| ST | No. | Serotypes | Virulence genes/stx subtypes | Clinical symptoms |
|---|---|---|---|---|
| 11 | 15 | O157:H7 (15) | stx2a+stx2c (11), stx1a+stx2a (1), stx1a+stx2c (3), eae (15), ehxA (15) | BD (11), NBS (4) |
| 21 | 9 | O26:H11 (9) | stx1a (8), stx2a (1), eae (3), ehxA (9) | BD (6), NBS (3) |
| 655 | 6 | O121:H19 (6) | stx2a (5), stx1a+stx2a (1), eae (6), ehxA (5) | BD (3), NBS (3) |
| 17 | 5 | O103:H2 (5) | stx1a (5), eae (5), ehxA (5) | BD (2), NBS (3) |
| 678 | 4 | O104:H4 (4) | stx2a (4) | HUS (2), BD (1), NBS (1) |
| 442 | 3 | O146:H21 (1), O91:H21 (2) | stx2b (1), stx2d (2), ehxA (3) | BD (1), NBS (2) |
| 504 | 3 | O117:H7 (2), O156:H7 (1) | stx1a (3) | NBS (3) |
| 10 | 2 | O113:H4 (1), O4:H16 (1) | stx1c (1), stx2d (1), ehxA (1) | NBS (2) |
| 13 | 2 | O117:H8 (2) | stx1c (2), ehxA (2) | NBS (2) |
| 33 | 2 | O91:H14 (2) | stx1a+stx2b (2), ehxA (2) | NBS (2) |
| 1724 | 2 | O150:H10 (2) | stx2b (2), ehxA (2) | NBS (2) |
| 25 | 1 | O128ab:H2 | stx1c+stx2b, ehxA | NBS |
| 58 | 1 | O126:H20 | stx2a, ehxA | NBS |
| 119 | 1 | O165:H25 | stx2a+stx2c, eae, ehxA | BD |
| 137 | 1 | O145:H28 | stx2a, eae, ehxA | NBS |
| 301 | 1 | O180:H2 | stx2a, eae, ehxA | NBS |
| 306 | 1 | O98:H21 | stx1a, ehxA | HUS |
| 325 | 1 | O15:H16 | stx2g | NBS |
| 329 | 1 | O136:H12 | stx2a, ehxA | NBS |
| 388 | 1 | O112ab:H2 | stx2b+stx2d | NBS |
| 410 | 1 | O8:H9 | stx2c | NBS |
| 447 | 1 | O5:H19 | stx1c, ehxA | NBS |
| 657 | 1 | O183:H18 | stx1a+stx2a, ehxA | BD |
| 658 | 1 | O103:H28 | stx1a+stx2a, eae, ehxA | BD |
| 679 | 1 | O163:H19 | stx1a+stx2d, ehxA | NBS |
| 738 | 1 | O146:H28 | stx2b | NBS |
| 811 | 1 | O128ac:H2 | stx1c+stx2b | BD |
| 1494 | 1 | O9a:H21 | stx2e | NBS |
| 1804 | 1 | O157:H7 | stx1a+stx2c, eae, ehxA | BD |
| 2388 | 1 | O15:H27 | stx1c+stx2b | NBS |
| 3101 | 1 | O78:H4 | stx1c+stx2b, ehxA | NBS |
| N1b | 1 | O91:H21 | stx2c+stx2d, eae, ehxA | NBS |
| N2b | 1 | O187:H28 | stx2g, ehxA | BD |
a
The number of isolates is indicated in parentheses if it contains more than one isolate.
b
Two new STs assigned in this study.