Table 2.
Characteristics of strains of VTEC O157 isolated in the prevalence studies of cattle faeces at slaughterhouses in Sweden between 1996 and 2002
| Presence of vtx genes | Phage type | No. of isolates | |||
|---|---|---|---|---|---|
| vtx1 | vtx2 | vtx2c | 1996/97 | 1998-2002 | |
| vtx1 | 8 | 1 | 1 | ||
| vtx2 | 4 | 2 | 2 | ||
| vtx2c | 2 | 1 | |||
| vtx2c | 8 | 1 | |||
| vtx2c | 14 | 8 | 16 | ||
| vtx2c | 32 | 2 | 2 | ||
| vtx2c | 34 | 4 | |||
| vtx2c | 49 | 2 | |||
| vtx2c | 54 | 1 | |||
| vtx2c | RDNC | 2 | |||
| vtx2 | vtx2c | 1 | 1 | ||
| vtx2 | vtx2c | 2 | 1 | 2 | |
| vtx2 | vtx2c | 4 | 6 | 34 | |
| vtx2 | vtx2c | 24 | 1 | ||
| vtx1 | vtx2c | 8 | 13 | 29 | |
| vtx1 | vtx2c | 14 | 1 | 1 | |
| vtx1 | vtx2c | RDNC 1 | 1 | 1 | |
| vtx1 | vtx2c | RDNC 2 | 10 | ||
| vtx1 | vtx2c | RDNC 3 | 1 | ||
| vtx1 | vtx2c | RDNC 4 | 1 | ||
| Total No. of isolates | 37 | 111 | |||