TABLE 2.
Presence of sab and other STEC virulence genes in various E. coli strains
| E. coli strain | Serotypee | Sourcea | Presence of gene:
|
||||
|---|---|---|---|---|---|---|---|
| eaeb | ehxAb | saab | subAb,d | sabc | |||
| 98NK2 | O113:H21 | HUS | − | + | + | + | + |
| 96GR1 | O157:H− | HUS | + | + | − | − | − |
| 95ZG1 | O26 | BD | + | + | − | − | − |
| 96RO1 | O111:H− | HUS | + | + | − | − | − |
| 95NR1 | O111:H− | HUS | + | + | − | − | − |
| 99BG1 | O111:H− | BD | + | + | − | − | − |
| 97MW1 | O113:H21 | BD/M/T | − | + | + | + | + |
| 3848 | O113:H21 | HUS | − | + | + | + | + |
| 1183 | O113:H21 | HUS | − | + | + | + | + |
| MW10 | O113:H21 | Food | − | + | + | + | − |
| 94CR | O48:H21 | HUS | − | + | + | + | − |
| 99AM1 | O23 | BD | − | + | + | + | + |
| 00MC2 | O6 | BD | − | + | + | ND | − |
| B2F1 | O91:H21 | HUS | − | + | + | − | − |
| MW13 | O98 | Food | − | + | + | − | − |
| MW9 | OR | Food | − | + | + | + | − |
| MW3 | O82:H8 | Food | − | + | + | + | + |
| MW7 | Ont:H11 | Food | − | + | + | + | − |
| 95HE4 | O91:H7 | D | − | + | + | + | − |
| MW15 | O141 | Food | − | − | − | ND | − |
| MW4 | Ont | Food | − | − | − | − | − |
| 95AS1 | O128 | D | − | − | − | − | − |
| MW12 | O159 | Food | − | − | − | − | − |
a
STEC strains were isolated either from foods or from the feces of patients with uncomplicated diarrhea (D), bloody diarrhea (BD), microangiopathic hemolytic anemia and thrombocytopenia (M/T), or HUS.
c
Determined by PCR using primers LH0147-f (5′-GGTGGATACAGCAGGTAATG-3′) and LH0147-r (5′-TATCTCACCACCTGCTATCG-3′) (163-bp PCR product).
d
ND, not determined.
e
Ont, O nontypeable; OR, O rough.