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Performance of the single intradermal comparative tuberculin test in identifying cattle with tuberculous lesions in Irish herds
  1. E. Costello, MVB, MVM, MRCVS1,
  2. J. W. A. Egan, MVB, MVM, PhD,MRCVS1,
  3. F. C. Quigley, FIBMS1 and
  4. P. F. O'Reilly, MVB, MRCVS1
  1. 1 Veterinary Research Laboratory, Abbotstown, Castleknock, Dublin 15, Ireland


The sensitivity of the single intradermal comparative tuberculin test, as applied in the Republic of Ireland, was estimated in 353 cattle with tuberculous lesions. These cattle had been removed from 47 herds which were depopulated owing to chronic or extensive infection with Mycobacterium bovis. The test had a sensitivity of 909 per cent, because 321 (909 per cent) of the 353 cattle with tuberculous lesions gave a positive or inconclusive result, and 32 gave a negative result. These 32 negative cattle came from 17 (36 per cent) of the 47 depopulated herds.

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