Chronic zoonotic mycobacterial infection of cattle.
Bovine tuberculosis is a chronic, slowly progressive granulomatous disease of cattle with important zoonotic and trade implications. It is controlled in many countries by test-and-slaughter programs.
Infection with Mycobacterium bovis, spread mainly by inhalation of respiratory aerosols between cattle and sometimes by ingestion; wildlife reservoirs can maintain infection.
Often none for long periods; advanced cases show chronic weight loss, weakness, a persistent low cough, enlarged lymph nodes, and reduced production. Signs depend on which organs carry tubercles.
Tuberculin skin testing as the primary screening tool, supported by interferon-gamma blood tests, plus confirmation by culture or PCR and lesions at slaughter.
Cattle are not treated; test-positive animals are removed under regulatory programs.
Routine testing and removal of reactors, movement controls, milk pasteurization to protect people, biosecurity, and wildlife management where relevant.
This content is for educational purposes and is not a substitute for professional veterinary advice. If you are worried about your pet, contact your veterinarian.
