Table II.
Number of strains | Gene and variant
|
Type of VTc | |||||
---|---|---|---|---|---|---|---|
Source and serogroup | eaec | tir | espA | espBc | espD | ||
Healthy sheep | |||||||
O2a | 13 | γ2/θ | γ2/θ | NT | α | NT | |
O4a | 2 | β1 | β1 | β1 | β | β1 | |
O20 | 1 | ζ | α1 | NT | α | NT | |
O26 | 2 | β1 | β1 | β1 | β | β1 | 1, 2 |
O55 | 1 | γ2/θ | γ2/θ | NT | α | NT | |
O55, 91, 103b | 4 | β1 | β1 | β1 | β | β1 | |
O55, 91, 103 | 2 | γ2/θ | γ2/θ | NT | α | NT | |
O71a | 1 | γ2/θ | γ2/θ | NT | α | NT | |
O76 | 1 | ɛ | β1 | NT | β | β1 | |
O103a | 4 | γ2/θ | γ2/θ | NT | α | NT | |
O103a | 13 | ɛ | β1 | NT | β | β1 | |
O109 | 2 | β1 | β1 | β1 | β | β1 | |
O153a | 12 | β1 | β1 | β1 | β | β1 | |
O153a | 2 | γ2/θ | γ2/θ | NT | α | NT | |
O177a | 3 | β1 | β1 | β1 | β | β1 | |
NT | 1 | β1 | β1 | β1 | β | β1 | |
Diarrheic lambs | |||||||
O2a | 1 | γ2/θ | γ2/θ | NT | α | NT | |
O4a | 1 | β1 | β1 | β1 | β | β1 | |
O26a | 5 | β1 | β1 | β1 | β | β1 | |
O71 | 2 | ι | β1 | β1 | β | β1 | |
O73 | 1 | γ2/θ | γ2/θ | NT | α | NT | |
O75 | 1 | β1 | γ2/θ | NT | β | NT | 1, 2 |
O80a | 1 | β1 | β1 | β1 | β | β1 | |
O103a | 1 | γ2/θ | γ2/θ | NT | α | NT | |
O153a | 3 | β1 | β1 | β1 | β | β1 | |
NT | 1 | β1 | β1 | β1 | β | β1 |