Animal Welfare in Zoonotic Disease Research

Research on emerging zoonotic diseases involves extensive animal use, and welfare considerations in this high-stakes research area require balancing scientific urgency with animal welfare obligations.

Key Facts

COVID-19 research used hundreds of thousands of animals including ferrets, hamsters, and primates
Challenge studies deliberately infecting animals with pathogens raise significant welfare concerns
Organoid and advanced cell culture systems are reducing but not eliminating animal use in pandemic research
Refinement protocols during disease challenge studies are essential to minimize animal suffering
The 3Rs framework applies to zoonotic disease research but is challenged by urgency and resource constraints

Welfare Considerations

Zoonotic disease research creates acute welfare tensions between scientific urgency and animal welfare obligations. Animals deliberately infected with pathogens experience disease — the very welfare harm researchers are trying to understand and prevent in humans. Welfare refinements including endpoint criteria, humane endpoints, and sedation protocols can reduce suffering within experimental constraints. The welfare case for investing in alternative methods — organoids, in vitro challenge models — is compelling: not only do they spare animal suffering, they may provide more translatable data. Research on alternatives is itself an animal welfare investment.

What You Can Do

Support research institutions with strong 3Rs programs in infectious disease research
Advocate for animal welfare considerations in emergency research authorization frameworks
Donate to organizations developing non-animal research methods for pandemic preparedness
Learn about the welfare challenges of disease challenge research and advocacy for improvement