Zoonotic Disease Prevention: The One Health Case for Better Animal Welfare

The One Health framework recognises that human, animal, and environmental health are inseparable, making animal welfare improvement a public health priority.

Key Facts

An estimated 70% of emerging infectious diseases originate from animals, with live animal markets and wildlife trade identified as high-risk contexts
COVID-19 likely originated from wildlife trading environments where stressed, crowded animals present ideal conditions for viral emergence and mutation
Intensive livestock farming with high stocking densities and antibiotic use creates conditions favouring antimicrobial resistant pathogen evolution
Avian influenza H5N1 pandemics risk increases with the scale of industrial poultry production and wild bird contact
Improved animal welfare through reduced crowding, better nutrition, and lower stress reduces disease susceptibility and shedding
The WHO One Health framework explicitly connects animal welfare improvement to pandemic prevention and human health security

Welfare Considerations

The COVID-19 pandemic brought renewed global attention to the relationship between animal welfare, wildlife trade, and pandemic risk. Stressed, immunocompromised animals shed pathogens more readily and show increased viral replication. The conditions that create poor animal welfare — crowding, inadequate nutrition, poor sanitation, high stress — are precisely the conditions that favour pathogen emergence and transmission. Improving animal welfare is therefore not only an ethical imperative but a practical pandemic prevention strategy with enormous human health implications. This alignment of animal welfare and human health interests provides a powerful policy argument for welfare investment.

What You Can Do

Support One Health policy frameworks that integrate animal welfare into human health and pandemic prevention strategies
Advocate for live animal markets to adopt welfare standards that reduce disease emergence risk
Reduce consumption of factory-farmed animal products where high density and stress conditions favour pathogen emergence
Follow the work of organisations like the Wildlife Conservation Society that connect wildlife welfare and pandemic prevention