Short Communication
Shifts in global bat diversity suggest a possible role of climate change in the emergence of SARS-CoV-1 and SARS-CoV-2

https://doi.org/10.1016/j.scitotenv.2021.145413Get rights and content

Highlights

  • Bats are the likely zoonotic origin of SARS-CoV-1 and SARS-CoV-2.

  • The local number of coronaviruses is correlated with bat species richness.

  • Climate change has shifted the global distribution of bats.

  • Bat richness has strongly increased in the likely origin of SARS-CoV-1 and 2.

  • Climate change may have been an important factor in the outbreaks of the two viruses.

Abstract

Bats are the likely zoonotic origin of several coronaviruses (CoVs) that infect humans, including SARS-CoV-1 and SARS-CoV-2, both of which have caused large-scale epidemics. The number of CoVs present in an area is strongly correlated with local bat species richness, which in turn is affected by climatic conditions that drive the geographical distributions of species. Here we show that the southern Chinese Yunnan province and neighbouring regions in Myanmar and Laos form a global hotspot of climate change-driven increase in bat richness. This region coincides with the likely spatial origin of bat-borne ancestors of SARS-CoV-1 and SARS-CoV-2. Accounting for an estimated increase in the order of 100 bat-borne CoVs across the region, climate change may have played a key role in the evolution or transmission of the two SARS CoVs.

Keywords

Coronavirus
Covid-19
Zoonoses
Species distribution modelling
Vegetation modelling
Habitat shifts

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