Many pathogens, including the virus that causes COVID-19, are thought to have originated in wild animals before spilling into human populations.
Agriculture is often blamed for accelerating this process, which is known as zoonotic spillover, through deforestation and habitat fragmentation that reduce biodiversity and increase the likelihood of contact between infected wildlife and humans.
"It's true that large-scale industrial monocultures are notorious for destroying biodiversity. As biodiversity declines locally, the normally species-rich collection of animals is reduced to a few species that are likely to harbor pathogens that may already be -- or certainly have the potential to evolve into -- pathogens that can infect humans."
"Right now, there is an oversimplification of the complex social reality that impacts disease spread," said study co-author Luis Chaves of Indiana University."Most diseases are impacted by this. Why do we have transmission hotspots in certain areas but not others, despite having similar environments? It's because both landscape change and how society works as a whole matter. Understanding this and reframing our thoughts is imperative to prevent future pandemics.
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