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Historically bovine TB was a major cuase of human TB, but the introduction of tuberculin testing and slaughter, meat inspection at abatoirs and the pasturisation of milk has dramatically reduced transmission to humans and bovine Tb as a cuase of human disease is now very low indeed.
Historically bovine TB was a major cuase of human TB, but the introduction of tuberculin testing and slaughter, meat inspection at abatoirs, the pasturisation of milk and the BCG vaccination has dramatically reduced transmission to humans and bovine TB as a cuase of human disease is now very low indeed.
The disease is of serious economic importance to farmers becasue of the stringent control measures which remain in place. These include the slaughter of infected animals and movement restrictions placed on farms with reactors or inconclusive results.
The disease is of serious economic importance to farmers becasue of the stringent control measures which remain in place. These include the slaughter of infected animals and movement restrictions placed on farms with reactors or inconclusive results.
==Diagnosis==
==Diagnosis==
The intradermal tuberculin test
===Clinical Signs===
===Clinical Signs===
Location and severity depend on which body systems are affected and the advancement of the disease. Due to the tesing and slaughter policy most cases in the UK are idenified before development of clinical signs.
====Respiratory form====
* Chronic cough- soft and productive
* Tachypnoea
* Dyspnoea
* Dull areas on auscultation of the lungs in advanced cases
====Alimentary form====
* Fewclinical signs
* Diarrhoea
* Bloat
Mammary involvement is now rarely seen, the uterine form is also uncommon but may reult in abortion.
===Laboratory Tests===
===Laboratory Tests===