Table 1.
Results of the E. coli isolation on EMB agar and Ridascreen Verotoxin EIA screening.
| Sampling Point | No. of Samples | No. of Colonies | ||
|---|---|---|---|---|
| Collected | Producing Typical Colonies on EMB (%) | Biochemically Confirmed as E. coli (%) | Positive to EIA (%) | |
| Faecal | 200 | 183 (91.5) | 152 (76) | 25 (12.5) |
| E-1 | 60 | 53 (88.3) | 48 (80) | 4 (6.7) |
| E-2 | 60 | 48 (80) | 42 (70) | 1(1.7) |
| E-3 | 60 | 52 (86.7) | 45 (75) | 0 (0) |
| Carrot | 100 | 79 (79) | 68 (68) | 6 (6) |
| Cabbage | 100 | 75 (75) | 66 (66) | 4 (4) |
| Lettuce | 100 | 78 (78) | 70 (70) | 2 (2) |
| S-1 | 20 | 17 (85) | 15 (75) | 1 (5) |
| S-2 | 20 | 10 (50) | 7 (35) | 0 (0) |
| S-3 | 20 | 12 (60) | 9 (45) | 0 (0) |