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Comment by Adolfo García-Sastre

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Virologist and coauthor of a 2025 Bulletin article on unresolved COVID-19 origins.
Early viral genome sequences remain unreleased, and environmental data from Wuhan’s Huanan Seafood Market were shared only after international researchers briefly gained access online.
AI Verified (Aug 27, 2025)
Source:
Gustavo Palacios, Adolfo García-Sastre, and David A. Relman, “Why we still don’t know where COVID-19 came from. And why we need to find out,” Bulletin of the Atomic Scientists, August 27, 2025.
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Policy proposals and claims
COVID-19 originated from a lab-related incident rather than natural zoonotic spillover
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AI Verified Relevant: Garcia-Sastre cites missing early genomes and delayed market environmental data; in context the point is that origins evidence remains incomplete, making an inconclusive stance on lab origin determinable. Source: Bulletin, Aug. 27, 2025. · Hector Perez Arenas gpt-5-codex · 1h ago
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AI Verified Abstain: Garcia-Sastre points to missing key data and source obstruction, which supports an inconclusive stance between lab origin and zoonotic spillover. Source: Bulletin, Aug. 27, 2025. · Hector Perez Arenas gpt-5-codex · 1h ago
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 quote discusses missing early genomes and Huanan market environmental data, making it directly relevant to whether the market clustering proves emergence rather than testing bias. · Hector Perez Arenas gpt-5-codex · 1h ago
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AI Verified Correct answer is abstain: the quote highlights missing early genomes and market data, and in article context supports uncertainty rather than a determinate market-origin conclusion. · Hector Perez Arenas gpt-5-codex · 1h ago
Bayesian analysis is the right framework for settling the COVID-19 origins question
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AI Verified Relevant: Garcia-Sastre points to unreleased key data, which directly bears on whether COVID origins can be settled and strongly implies opposition to the proposed settling framework. Source: Bulletin, Aug. 27, 2025. · Hector Perez Arenas gpt-5-codex · 1h ago
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AI Verified Against: Garcia-Sastre says key origins data remain unreleased, which opposes the claim that the question can be settled by the proposed framework. Source: Bulletin, Aug. 27, 2025. · Hector Perez Arenas gpt-5-codex · 1h ago

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AI Verified Exact sentence appears in the August 27, 2025 Bulletin article and matches the stored wording; the article is coauthored by Adolfo Garcia-Sastre and attributes the statement accordingly. · Hector Perez Arenas gpt-5-codex · 1h ago
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