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Bovine TB infection status in cattle in Great Britain in 2017
  1. L. D. Perrin,
  2. K. A. Harris,
  3. M. Reynolds,
  4. J. R. Lawes,
  5. S. Frost,
  6. A. Brouwer,
  7. J. Dale,
  8. E. Palkopoulou and
  9. P. A. Upton
  1. Department of Epidemiological Sciences
  2. Bacteriology
  3. Data Systems Workgroup, APHA, Woodham Lane, New Haw, Addlestone, Surrey KT15 3NB
  1. e-mail: lauren.perrin{at}apha.gov.uk

Statistics from Altmetric.com

Key points

  • In Great Britain (GB) overall, approximately nine new incidents of bovine TB (bTB) were detected in 2017 for every 100 herds that underwent a full year of surveillance, a slight increase from the 2016 figure of 8.4.

  • There was substantial variation across GB at country, surveillance risk area and county level.

  • Despite a slight increase in the number of incidents per 100 herd-years at risk in 2017 (0.9, up from 0.6 in 2016), Scotland remained Officially TB Free. A reduction in the number of herds undergoing a full year of surveillance contributed to the observed increase in rate.

  • In the Low risk area of England in 2017 the incidence was unchanged from 2016 (one TB incident per 100 herd-years at risk).

  • There has been a steady decline in bTB incidence in Wales since 2012, and in 2017 just over seven incidents of TB were detected in every 100 herds under surveillance.

  • The TB epidemic in the High risk area of England has plateaued since 2011; this plateau and the high frequency of repeat infections on holdings recently cleared of TB, suggests that control measures are containing infection rather than reducing it.

  • There was a significant increase in bTB incidence in the Edge area of England between 2016 and 2017, rising from 6.7 to 7.7 incidents per 100 herds under surveillance. This rise has been attributed to more intensive surveillance since 2013, the purchase of (undisclosed) infected cattle, and the development of areas of endemic badger and cattle infection.

New incidents in 2017

Bovine TB (bTB) was detected in 4643 of the 75,656 live herds in Great Britain (GB) in 2017. England had the highest proportion of new incidents, affecting 7.6 per cent of all herds. In Wales, the figure was slightly lower, with 6.6 per cent of herds experiencing a new bTB incident. In …

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