TABLE 2.
Distribution of virulence genes in collections of E. coli isolates recovered from each of seven sites sampled in September 2007
| Virulence gene | Frequency in E. coli isolates from sitea: |
|||||||
|---|---|---|---|---|---|---|---|---|
| 1 (n = 32) | 2 (n = 44) | 3 (n = 12) | 4 (n = 88) | 5 (n = 48) | 6 (n = 49) | 7 (n = 66) | Total | |
| elt | 2 | 58 | 2 | 2 | 6 | 70 | ||
| astA | 3 | 10 | 4 | 5 | 20 | 10 | 18 | 70 |
| estA | 3 | 52 | 1 | 56 | ||||
| estB | 52 | 52 | ||||||
| faeG | 8 | 8 | ||||||
| sepA | 1 | 3 | 2 | 15 | 21 | |||
| paa | 1 | 1 | 1 | 3 | ||||
| fedA | 1 | 1 | ||||||
| stx2e | 1 | 1 | ||||||
| Total | 5 | 13 | 12 | 169 | 28 | 25 | 40 | 282 |
a
Indicated are the numbers of isolates from each site that carried the indicated gene. The site numbers correspond to those in Fig. 1.