Table 9.
Virulence factors genes in hemolytic Escherichia coli isolates from pigs (n = 164) with and without post-weaning diarrhea
| Virulence factor genes | Diarrhea | Not diarrhea |
|---|---|---|
| F18 | 18 | 14 |
| F18 + Lt + StB | 10 | 10 |
| F18 + STa | 7 | 4 |
| No fimbria, no toxin | 4 | 8 |
| F18 + ? | 4 | 3 |
| F4 + Lt + STb | 4 | 1 |
| F18 + Lt | 4 | 1 |
| F18 + STa + STb | 3 | 4 |
| F18 + STb | 2 | 0 |
| F18 + Vt1 + Vt2 | 1 | 2 |
| F4 + STa + STb | 1 | 0 |
| F4 | 1 | 0 |
| STb | 0 | 1 |
The data was collected in outbreaks of post-weaning diarrhea in nine Danish commercial indoor herds weaning without medicinal zinc. Rows are sorted according to prevalence among diarrheic pigs, and subsequently, prevalence among non-diarrheic pigs
F4: Fimbria type 4
F18: Fimbria type 18
STa: Heat-stabile toxin type A
STb: Heat-stabile toxin type B
Lt: Heat-labile toxin
Vt1: Verotoxin type 1
Vt2: Verotoxin type 2
?: Missing values for the toxin genotypes