Research and analysis

Sheep: TSE surveillance statistics

Statistics on the active and passive surveillance of transmissible spongiform encephalopathies (TSEs) in sheep in Great Britain.


TSE surveillance statistics: sheep

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Cases of TSE disease found in sheep from passive surveillance have been recorded since 1993. The European Union active surveillance started in January 2002.

In active surveillance, the number of sheep sampled in the testing programme has varied each year . It has included:

  • a sample of fallen sheep over 18 months of age.
  • a sample of healthy slaughtered sheep over 18 months of age.

Cases which have been identified from flocks in the Compulsory Scrapie Flock Scheme (CSFS) are shown separately.

APHA attempt to trace all cases of scrapie back to their natal (birth) flock so that it can confirm disease on the appropriate premises and control measures can be applied. In some cases this can take time. Where a final decision has not been made on where to confirm disease, the case is included in the number of pending cases.

The following reports are also available:

Published 6 October 2015
Last updated 15 August 2018 + show all updates
  1. Document updated
  2. Document updated
  3. Sheep document updated
  4. Document updated
  5. Documents updated
  6. Document updated
  7. Updated document - January 2018
  8. Updated document
  9. Updated document
  10. Document updated
  11. Updated document
  12. Updated document
  13. Updated document
  14. Document updated
  15. Document updated
  16. Document updated
  17. Sheep document updated
  18. Updated sheep document
  19. Document updated
  20. Document updated
  21. Sheep document updated
  22. Sheep document updated
  23. Sheep document updated
  24. Sheep document updated
  25. Sheep document updated
  26. Document updated
  27. Sheep document updated
  28. Document updated
  29. Sheep document updated
  30. Sheep document updated
  31. Document updated for December 2015
  32. Document updated for November 2015
  33. Updated document for October 2015
  34. Sheep publication updated.
  35. First published.
  36. Document updated for May 2015
  37. Statistics updated as of 28th Feb
  38. AHVLA documents have been re-assigned to the new Animal and Plant Health Agency (APHA).