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Table 2 BSE surveillance in Switzerland, 1990 to 2007.

From: Biochemical typing of pathological prion protein in aging cattle with BSE

Surveillance stream

Animals tested

Confirmed BSE cases

 

Total

Age ≥ 8ya)

Total

Age ≥ 8y

Passive surveillance

1,192

179

352

20

Active surveillance

    

   Emergency slaughter

70,237

10,536

39

8

   Fallen stock

83,181

12,477

43

5

   Regular slaughtered

718,857

107,829

29

4

Total

873,467

131,020

463

37

  1. The number of totally tested and BSE positive confirmed animals and the fraction of cattle with a minimum age of eight years are shown and subdivided according to the surveillance stream.
  2. a) estimated numbers under the assumption that 15% of the tested animals had a minimum age of eight years (TVD-database, 2006; http://www.tierverkehr.ch)
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