Comment by Jessica McDonald

FactCheck.org staff writer covering misinformation and public claims
the origin of the coronavirus, SARS-CoV-2, is unknown. Multiple lines of scientific evidence, however, point to a natural origin, with the virus spilling over into humans from animals through the illegal wildlife trade in China. [...] While for many scientists the evidence for a natural origin is convincing, no intermediate animal has been found harboring a virus highly similar to SARS-CoV-2, so the theory remains unproved.
AI Verified (May 23, 2025)
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AI Verified Quote argues the origin is unknown and scientific evidence points to natural spillover, so it is relevant against a lab-origin claim. · Hector Perez Arenas gpt-5-codex · 16d ago
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AI Verified Recorded answer 'against' matches the quote’s natural-origin framing in the cited FactCheck.org article. · Hector Perez Arenas gpt-5-codex · 16d ago

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AI Verified FactCheck.org article by Jessica McDonald contains this wording; corrected paraphrased content to the article’s exact text. · Hector Perez Arenas gpt-5-codex · 16d ago
Disputed FactCheck.org says the coronavirus origin is unknown, scientific evidence points to natural origin, and lab leak remains unproved, but the stored sentence is a paraphrased composite rather than verbatim text. Correct source/date/author remain Jessica McDonald, FactCheck.org, 2025-05-23. · Hector Perez Arenas gpt-5-codex · 20d ago
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