Wildlife trade increases pathogen transmission: What 40 years of data say about spillover
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Study: Wildlife Trade Raises Human Disease Risk
Is wildlife trade the biggest pandemic threat or is deforestation the true driver of zoonotic disease?
Above: This pangolin was confiscated from a smuggling ring by the Department of Wildlife and National Parks in Kuala Lumpur in August 2002. Image credit: Jimin Lai/AFP/Getty Images
The Spin
Narrative A
Wildlife trade is a ticking time bomb for public health — traded mammals are 50% more likely to share diseases with humans, and the risk compounds the longer a species stays in circulation. Illegal trade and live animal markets are the worst offenders, packing animals together in conditions that practically manufacture the next pandemic. Exotic pet trends fueled by social media are making this worse, and without serious enforcement and policy reform, another COVID-scale disaster is inevitable.
Narrative B
Although wildlife trade contributes to zoonotic spillover, blaming wildlife trade alone misses the bigger picture — deforestation and biodiversity loss are the real engines driving zoonotic spillover by pushing humans deeper into animal habitats. When forests are cleared for farming or mining, disease reservoirs such as bats and rodents thrive while natural buffers disappear, creating ideal spillover conditions. Fixing pandemic risk means tackling land use and habitat destruction, not just cracking down on animal markets.