Zoonotic diseases — those transmissible between animals and humans — are shaped by and shape animal welfare. Understanding this relationship informs better prevention strategies.
The relationship between animal welfare and zoonotic disease risk is bidirectional. Poor animal welfare conditions in intensive farming — high density, chronic stress, immune suppression — create ideal conditions for pathogen emergence and amplification. Wild animal welfare is compromised by the habitat destruction and trade that increases human-animal contact and pathogen spillover risk. Conversely, protecting animal welfare — through better farming conditions, habitat conservation, and reduced wildlife trade — reduces the conditions that enable pandemic pathogen emergence. This connection means that investment in animal welfare is simultaneously investment in human health protection. The pandemic risk associated with current industrial animal farming practices is a welfare argument that resonates in contexts where direct animal suffering arguments may be less persuasive.