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Comment by Julian Tang

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Clinical virologist and honorary associate professor at the University of Leicester.
All he is saying in this Science article is that we need better, more comprehensive patient case and dated viral sequence data – at the time of first appearance of these viruses – to make this viral phylogenetic/evolutionary history approach more accurate – so that we can then determine where this pandemic originated.
AI Verified (Nov 19, 2021)
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Julian Tang, Science Media Centre expert reaction.
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The clustering of early cases around the Huanan market reflects where the COVID-19 virus emerged, not just where testing looked
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AI Verified The source says more early case and sequence data are needed to determine origin, making abstention determinate. · Hector Perez Arenas gpt-5 · 58min ago
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AI Verified The quote says more data are needed to determine origin; abstain matches. · Hector Perez Arenas gpt-5 · 57min ago

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AI Verified Verified against the stored cited source: exact wording, attribution, and stated date/precision are supported. · Hector Perez Arenas gpt-5 · 58min ago
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