Research Article
Molecular Characterization of Enterohemorrhagic E. coli O157 Isolated from Animal Fecal and Food Samples in Eastern China
Table 3
Genotypic and phenotypic characteristics of EHEC O157 isolates.
| | Strains | Virulence genes | MLST | Phenotypic group | RAPD type | Biofilm formation | Source | | stx1 | stx2 | hlyA | eae | Gene combinations |
| | ATCC35150 | + | + | + | + | G3 | ST11 | D | R1 | No | ATCC | | ATCC43889 | + | + | + | + | G3 | ST11 | D | R1 | No | ATCC | | EHEC06 | − | − | + | − | G2 | ST11 | D | R1 | No | Pig feces | | EHEC07 | + | + | + | + | G3 | ST11 | D | R1 | Moderate | Pork | | EHEC31 | + | − | − | − | G5 | ST11 | D | R1 | Weak | Pig feces | | EHEC32 | + | − | − | − | G5 | ST11 | D | R1 | Strong | Pig feces | | EHEC36 | − | + | − | − | G6 | ST11 | D | R1 | Strong | Pork | | EHEC37 | + | + | + | + | G3 | ST11 | D | R1 | No | Pig feces | | EHEC38 | + | + | + | + | G3 | ST11 | D | R1 | No | Pig feces | | EHEC39 | + | + | + | + | G3 | ST11 | D | R1 | No | Pig feces | | EHEC41 | + | + | + | + | G3 | ST11 | D | R1 | No | Pig feces | | EHEC40 | − | + | + | + | G4 | ST11 | D | R9 | Strong | Pig feces | | EHEC05 | − | + | − | + | G7 | ST88 | A | R2 | No | Pig feces | | EHEC46 | − | + | − | − | G6 | ST88 | A | R2 | No | Pig feces | | EHEC47 | − | + | − | + | G7 | ST88 | A | R2 | No | Pig feces | | EHEC09 | − | − | + | − | G2 | ST88 | D | R2 | Strong | Chicken feces | | EHEC12 | − | − | + | − | G2 | ST88 | D | R2 | Moderate | Chicken | | EHEC03 | − | − | + | − | G2 | ST641 | D | R3 | No | Chicken feces | | EHEC25 | − | − | + | − | G2 | ST641 | D | R3 | No | Pork | | EHEC43 | − | − | − | + | G1 | ST641 | D | R3 | No | Pig feces | | EHEC45 | − | − | − | + | G1 | ST641 | D | R3 | No | Pig feces | | EHEC16 | − | − | − | + | G1 | ST117 | D | R4 | Weak | Cattle feces | | EHEC18 | − | + | + | + | G4 | ST117 | D | R4 | Weak | Pig feces | | EHEC30 | − | − | − | + | G1 | ST117 | D | R4 | Weak | Milk | | EHEC44 | − | − | − | + | G1 | ST10 | A | R10 | No | Pig feces | | EHEC02 | + | − | − | + | G8 | ST224 | D | R2 | Weak | Pig feces | | EHEC15 | − | − | + | − | G2 | ST278 | B1 | R2 | No | Cattle feces | | EHEC28 | − | − | − | − | G9 | ST1114 | B2 | R4 | Moderate | Pig feces | | EHEC27 | − | − | − | + | G1 | ST1602 | A | R8 | Strong | Pig feces | | EHEC01 | − | − | + | + | G19 | Unknown | B2 | R5 | Moderate | Pig feces | | EHEC08 | − | + | + | + | G4 | Unknown | B2 | R6 | Weak | Duck feces | | EHEC26 | − | − | − | + | G1 | Unknown | D | R7 | Strong | Pig feces |
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