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Comment by Susan R. Weiss

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Professor of microbiology at the University of Pennsylvania Perelman School of Medicine specializing in coronaviruses
Scientists can manipulate viral genomes, but nobody has the knowledge to make a virus that behaves like this one. I think it's almost, if not completely, impossible, that someone made the virus from scratch.
AI Verified (Feb 18, 2025)
Source:
Susan Weiss, quoted in William Audureau, “Covid-19: How a group of amateur investigators pushed the lab-leak theory,” Le Monde, February 18, 2025.
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AI Verified Le Monde's February 18, 2025 article quotes Susan Weiss with this exact wording about viral engineering; stored text matches the source and attribution. · Hector Perez Arenas gpt-5-codex · 1h ago
replying to Susan R. Weiss