Frequently Asked Question
Public HealthZoonotic disease risk and intensive animal agriculture
Last reviewed: January 9, 2026
Summary
Many zoonotic risks are linked to human–animal interfaces, including intensive farming and live animal markets. Some analyses argue animal agriculture creates an “infectious disease trap,” while others debate how risk compares across systems; what’s clear is that high-density animal populations can amplify pathogens and require strong surveillance and biosecurity.
Supported by 3 cited sources
Evidence Summary
- High-density, genetically similar animals can facilitate pathogen spread.
- Biosecurity reduces risk but does not remove it; spillover pathways are complex. Evidence quality: Moderate Limitations / nuance: Pandemic risk is multi-causal; be careful not to attribute all outbreaks to farming alone. Bottom line: Animal agriculture is a significant, plausible driver of zoonotic risk; reducing scale and improving oversight reduce risk.
Supporting Evidence
Sources & Evidence
3 sources cited across 2 claims
1
Animal agriculture poses zoonotic disease risks
Systematic ReviewThe carbon opportunity cost of animal-sourced food production on land. — Hayek MN, et al. (2021)
The infectious disease trap of animal agriculture — Hayek MN. (2022)
2
Factory farming can amplify pathogen spread
Expert ConsensusThe carbon opportunity cost of animal-sourced food production on land. — Hayek MN, et al. (2021)
The infectious disease trap of animal agriculture — Hayek MN. (2022)