Table 1.
Characteristics of STEC strains regarding lpfA variants, origin, associated disease, stx genotype and serotype.
| Antigen |
No. of strains |
Origin/associated disease (No. of strains) |
stx genotype | lpfA1 | lpfA2 | |
|---|---|---|---|---|---|---|
| O | H | |||||
| 2 | 6 | 1 | A | 2 | 2 | 1 |
| 2 | 25 | 1 | C | 2 | 1 | |
| 5 | NM | 1 | A | 1 | 1 | |
| 7 | NM | 2 | C | 1 | 1 | |
| 7 | 21 | 1 | C | 2 | 1 | |
| 7 | 21 | 1 | C | 1+2 | 1 | |
| 8 | 16 | 1 | HUS | 1+2 | 2 | 1 |
| 8 | 16 | 1 | HUS | 2 | - | - |
| 8 | 16 | 1 | C | 1+2 | 2 | 1 |
| 8 | 19 | 1 | HUS | 2 | 2 | 1 |
| 8 | 19 | 2 | HUS | 2 | 1 | |
| 8 | 19 | 1 | D | 2 | 2 | 1 |
| 15 | 27 | 2 | HUS(1), C(1) | 2 | 1 | |
| 15 | 27 | 1 | D | 1+2 | 1 | |
| 20 | 19 | 1 | HUS | 2 | 1 | |
| 22 | 8 | 2 | C | 2 | 2 | 1 |
| 22 | 16 | 2 | C | 2 | 1 | |
| 22 | NT | 1 | D | 2 | 2 | 1 |
| 39 | 49 | 1 | C | 2 | 1 | |
| 46 | 38 | 2 | C | 1+2 | 1 | |
| 58 | 40 | 1 | D | 1 | 1 | |
| 59 | 19 | 4 | HUS | 2 | 2 | 1 |
| 74 | 12 | 1 | C | 1 | 1 | |
| 74 | 28 | 1 | C | 2 | 2 | 1 |
| 74 | 42 | 1 | C | 1+2 | 2 | 1 |
| 79 | 19 | 2 | C | 1+2 | 1 | |
| 82 | 8 | 1 | C | 1+2 | 2 | 1 |
| 91 | 16 | 1 | C | 2 | 2 | 1 |
| 91 | 21 | 5 | D(3), HUS(2) | 2 | 2 | 1 |
| 91 | 21 | 1 | C | 1+2 | 2 | 1 |
| 91 | NT | 1 | A | 1 | 2 | 1 |
| 91 | NM | 1 | HUS | 1+2 | 2 | 1 |
| 113 | 21 | 4 | HUS(2)*, D(1), C(1) | 2 | 1 | |
| 113 | NM | 1 | D | 2 | 2 | 1 |
| 116 | 21 | 2 | C | 1+2 | 1 | |
| 116 | 21 | 1 | C | 2 | 1 | |
| 117 | 7 | 1 | A | 1 | - | - |
| 130 | 11 | 2 | D(1), C(1) | 1+2 | 2 | 1 |
| 130 | 11 | 1 | C | 1 | 2 | 1 |
| 136 | 12 | 2 | C | 1 | 1 | |
| 141 | 49 | 2 | C | 2 | 2 | 1 |
| 143 | NM | 1 | HUS* | 2 | - | 3 |
| 163 | 19 | 2 | D(1), C(1) | 2 | 2 | 1 |
| 171 | 2 | 2 | D | 2 | 1 | |
| 174 | 8 | 1 | A | 2 | 1 | |
| 174 | 21 | 11 | HUS(1), D(5), A(4), C(1) | 2 | 2 | 1 |
| 174 | 28 | 2 | D(1), HUS(1)* | 2 | 1 | |
| 174 | 28 | 1 | C | 1+2 | 1 | |
| 174 | NM | 1 | D | 1+2 | 1 | |
| 174 | NM | 1 | HUS | 2 | 2 | 1 |
| 178 | 19 | 1 | C | 2 | 1 | |
| 178 | 19 | 1 | C | 2 | 2 | 1 |
| 178 | 19 | 2 | HUS(1), C(1) | 1+2 | 2 | 1 |
| 179 | 8 | 2 | C | 2 | 2 | 1 |
| NT | 2 | 2 | C | 2 | 1 | |
| NT | 4 | 1 | HUS | 2 | - | - |
| NT | 4 | 1 | HUS | 2 | 2 | 1 |
| NT | 7 | 2 | D(1), C(1) | 2 | 2 | 1 |
| OR | 11 | 1 | A | 2 | - | 1 |
| NT | 19 | 2 | A(1), C(1) | 2 | 1 | |
| NT | 19 | 1 | HUS | 2 | 2 | 1 |
| NT | 21 | 1 | C | 2 | 1 | |
| NT | 21 | 1 | C | 2 | 2 | 1 |
| NT | 28 | 2 | C | 2 | 2 | 1 |
| NT | 46 | 2 | A(1), C(1) | 2 | 2 | 1 |
| NT | 49 | 1 | D | 1+2 | 1 | |
| NT | NM | 5 | D(2), HUS(3) | 2 | 2 | 1 |
| NT | NM | 1 | D | 1 | - | - |
| NT | NM | 1 | A | 1+2 | - | 1 |
| NT | NM | 1 | C | 1 | 1 | |
| OR | NM | 1 | A | 2 | 2 | 1 |
| NT | NT | 1 | A | 1 | 2 | 1 |
| NT | NT | 2 | D(1), HUS(1) | 2 | 2 | 1 |
| NT | NT | 1 | HUS | 2 | 2 | 1 |
| NT | NT | 1 | A | 1 | 2 | 1 |
| Total | 120 | |||||
*
HUS patient died; C, cattle; A, asymptomatic patient; D, diarrheal patient; NM, non motile strains; NT, non-typeable.