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Study Purports SARS-CoV-2 Traveled Through Wildlife Trade, Not Bat Migration

  • Researchers from UC San Diego published a study in Cell showing SARS-CoV-2 emerged in humans in Wuhan in late 2019.
  • The virus’s closest ancestors were found in horseshoe bats from regions of western China and northern Laos, and it reached Wuhan—located over a thousand kilometers away—through the movement of wildlife used in trade.
  • The study found that natural bat dispersal alone is highly unlikely due to bats’ limited foraging range of 2–3 kilometers, implying intermediate hosts transported the virus.
  • Jonathan Pekar noted the virus ancestors left their original areas only one to two years before SARS and five to seven years before COVID-19 emerged in Wuhan.
  • These findings challenge the lab-leak theory, emphasize risks from wildlife trade, and suggest monitoring bat viruses could help prevent future pandemics.
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Phys.org broke the news in United Kingdom on Wednesday, May 7, 2025.
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