The emergence of zoonotic diseases from animal populations is deeply connected to animal welfare conditions — both in wildlife markets and in intensive livestock systems.
The connection between animal welfare and pandemic risk is direct and underappreciated. Stressed, immunocompromised animals in high-density conditions shed pathogens at higher rates and are more susceptible to novel infections. Live animal markets that mix species from multiple ecological niches create evolutionary opportunities for viruses to recombine. The welfare argument and the public health argument point in the same direction: reducing animal stress, improving biosecurity, and eliminating high-risk wildlife trade practices would simultaneously improve animal lives and reduce the risk of the next pandemic.