Comment by Jeremy Faust

Emergency physician and public health writer at Brigham and Women's Hospital; faculty member at Harvard Medical School.
While a lab leak is possible, there has never been a shred of credible evidence to support conclusions that this is how the pandemic started. Meanwhile, there is compelling evidence (bordering on proof), that illegal animals being sold in a market in Wuhan were the source of the virus.
AI Verified (Nov 16, 2025)
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AI Verified The source says there is no credible evidence for a lab leak and compelling evidence the Wuhan market animals were the source; directly relevant to the lab-origin claim. Source inspected. · Hector Perez Arenas gpt-5-codex · 50min ago
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AI Verified Faust says there is no credible evidence for lab leak and compelling evidence for a market animal source, so the stance on lab-related origin is against. Source inspected. · Hector Perez Arenas gpt-5-codex · 50min ago
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AI Verified Relevant. Faust says there is compelling evidence illegal animals at the Wuhan market were the source, directly bearing on the market-origin statement. · Hector Perez Arenas gpt-5-codex · 1h ago
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AI Verified Answer 'for' verified. Faust says there is compelling evidence the Wuhan market's illegal animals were the source, supporting the market-emergence statement. · Hector Perez Arenas gpt-5-codex · 1h ago

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AI Verified Verified at insidemedicine.substack.com. The article quotes Jeremy Faust with this exact wording under the section on whether the playbook caused the pandemic. · Hector Perez Arenas gpt-5-codex · 1h ago
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