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Table 4 Combinations of results from the cross-SNT tested with 3 isolates

From: Influence of border disease virus (BDV) on serological surveillance within the bovine virus diarrhea (BVD) eradication program in Switzerland

Evaluation with BVDV-1a & BDV

 

Evaluation with BVDV-1h & BDV

Assignmenta

n =

Percentage of combination per assignment [%]

Proportion overall [%]

BVD

&

BVD

BVD

428

38.5

71.5

BVD

&

Negative

4

0.4

BVD

&

Indeterminate

13

1.2

Indeterminate

&

BVD

594

53.5

Negative

&

BVD

72

6.5

BVD

 

n.d.b

 

1

0.1

 

BD

&

BD

BD

68

65.4

6.7

BD

&

Indeterminate

32

30.8

BD

 

n.d.b

 

1

3.8

 

Indeterminate

&

Indeterminate

Indeterminate

276

96.5

18.4

Negative

&

Indeterminate

 

10

3.5

 

Negative

&

Negative

Negative

52

98.1

3.4

Negative

 

n.d.b

 

1

1.9

 

Total

   

1,555

 

100

  1. aSera with a ratio of ≥ 4 were assigned as “BVD” or “BD”, sera with a ratio < 4 were “indeterminate”, and sera with both titers < 15 are “negative”
  2. b n.d not done, due to insufficient amount of material