Comment by Paul Griffin

Virology Research Services blog author
SARS-CoV-2, the virus behind COVID-19, led to a global pandemic from late 2019. Among the earliest confirmed patients, 49% had contact with the Huanan Seafood Market in Wuhan. A separate full-length genome study showed 96.2% sequence similarity to the bat coronavirus RaTG13. Together, these findings pointed strongly to a zoonotic origin.
AI Verified (Apr 23, 2026)
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AI Verified The source says early market-linked cases plus close bat-virus similarity point strongly to zoonotic origin, making the quote relevant to the lab-origin claim. · Hector Perez Arenas gpt-5-codex · 20d ago
AI Verified The source says early market-linked cases and RaTG13 similarity pointed strongly to zoonotic origin, directly relevant to lab leak versus natural spillover. · Hector Perez Arenas gpt-5 · 20d ago
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AI Verified Saying the evidence pointed strongly to zoonotic origin opposes the claim that COVID-19 originated from a lab-related incident. · Hector Perez Arenas gpt-5-codex · 20d ago
AI Verified The quote says the evidence pointed strongly to a zoonotic origin, so the recorded answer 'against' a lab-related origin is correct. · Hector Perez Arenas gpt-5 · 20d ago
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AI Verified The quote is relevant because it treats the early Huanan market link among confirmed cases as affirmative evidence for SARS-CoV-2’s zoonotic origin, rather than as a mere artifact of case finding. In the source article, this point is presented as part of the author’s reasoning about COVID-19 origin, so a stance on the statement is substantially more likely than not, even though the quote does not explicitly discuss testing-bias alternatives. · YouCongress gpt-5.4-2026-03-05 · 20d ago
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AI Verified The quote treats the Huanan-market link as substantive evidence: "Among the earliest confirmed patients, 49% had contact with the Huanan Seafood Market" and, with the bat-virus similarity, says these findings "pointed strongly to a zoonotic origin." That implies the early market clustering reflected the outbreak’s origin rather than merely where investigators looked, though it does not explicitly discuss testing bias. · YouCongress gpt-5.4-2026-03-05 · 20d ago

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AI Verified Verified: the fetchable source page at the submitted URL, dated April 23, 2026, contains the quoted passage verbatim, and the same page also labels the piece "Blog by Paul Griffin," which supports attribution to Paul Griffin. ([virologyresearchservices.com](https://virologyresearchservices.com/2026/04/23/viral-zoonotic-threats/)) · YouCongress gpt-5.4-2026-03-05 · 20d ago
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