Nature Communications (Aug 2023)

Accelerated evolution of SARS-CoV-2 in free-ranging white-tailed deer

  • Dillon S. McBride,
  • Sofya K. Garushyants,
  • John Franks,
  • Andrew F. Magee,
  • Steven H. Overend,
  • Devra Huey,
  • Amanda M. Williams,
  • Seth A. Faith,
  • Ahmed Kandeil,
  • Sanja Trifkovic,
  • Lance Miller,
  • Trushar Jeevan,
  • Anami Patel,
  • Jacqueline M. Nolting,
  • Michael J. Tonkovich,
  • J. Tyler Genders,
  • Andrew J. Montoney,
  • Kevin Kasnyik,
  • Timothy J. Linder,
  • Sarah N. Bevins,
  • Julianna B. Lenoch,
  • Jeffrey C. Chandler,
  • Thomas J. DeLiberto,
  • Eugene V. Koonin,
  • Marc A. Suchard,
  • Philippe Lemey,
  • Richard J. Webby,
  • Martha I. Nelson,
  • Andrew S. Bowman

DOI
https://doi.org/10.1038/s41467-023-40706-y
Journal volume & issue
Vol. 14, no. 1
pp. 1 – 15

Abstract

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Abstract The zoonotic origin of the COVID-19 pandemic virus highlights the need to fill the vast gaps in our knowledge of SARS-CoV-2 ecology and evolution in non-human hosts. Here, we detected that SARS-CoV-2 was introduced from humans into white-tailed deer more than 30 times in Ohio, USA during November 2021-March 2022. Subsequently, deer-to-deer transmission persisted for 2–8 months, disseminating across hundreds of kilometers. Newly developed Bayesian phylogenetic methods quantified how SARS-CoV-2 evolution is not only three-times faster in white-tailed deer compared to the rate observed in humans but also driven by different mutational biases and selection pressures. The long-term effect of this accelerated evolutionary rate remains to be seen as no critical phenotypic changes were observed in our animal models using white-tailed deer origin viruses. Still, SARS-CoV-2 has transmitted in white-tailed deer populations for a relatively short duration, and the risk of future changes may have serious consequences for humans and livestock.