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Wildlife trade drives animal-to-human pathogen transmission over 40 years
Jérôme M W Gippet1,2, Colin J Carlson3, Tristan Klaftenberger2
1Department of Biology, University of Fribourg, Fribourg, Switzerland.
Abstract:
The wildlife trade affects a quarter of terrestrial vertebrates and creates opportunities for cross-species pathogen transmission, but its precise role in shaping animal-human pathogen exchange remains unclear. In our analysis of 40 years of global wildlife trade data, we show that traded mammals are 1.5-fold as likely to share pathogens with humans as nontraded mammals, and that illegal and live-animal trade further exacerbate pathogen sharing. Time spent in trade predicts the number of zoonotic pathogens that a wildlife species hosts. On average, a species shares an additional pathogen with humans for every 10 years it is traded.
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