Bovine Brucellosis: Welfare Implications in Cattle and Humans

Brucellosis causes serious welfare problems in infected cattle including abortion storms and chronic disease, while posing significant human health risks.

Key Facts

Brucella abortus causes infectious abortion in cattle; UK is officially brucellosis-free since 1985
Infected cattle suffer reproductive failure, retained placentas, and sometimes chronic arthritis
Aborted calves and foetal fluids represent major sources of infection for other cattle and humans
Re-emergence risk comes from wildlife reservoirs and international animal movement
Regular testing and strict movement controls underpin the UK's disease-free status

Welfare Considerations

Brucellosis causes significant suffering in cattle: abortion in late pregnancy is physically demanding and distressing for cows, and retained foetal membranes often follow, predisposing to metritis. Cattle with joint localisation develop painful arthritis affecting mobility and welfare. Orchitis in bulls causes significant pain. Maintaining brucellosis-free status through vigilant testing protects both cattle welfare and human public health, as the disease causes prolonged illness in humans. Vigilance against re-introduction, including from wildlife contact in endemic regions, is a welfare as well as a disease control priority.

What You Can Do

Maintain testing programmes as required in your region
Ensure strict biosecurity for introduced cattle from areas with disease risk
Report any suspected abortion storms to your veterinarian immediately
Support surveillance programmes that monitor for brucellosis re-emergence