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Comment by Jose L. Domingo

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Environmental health researcher at Universitat Rovira i Virgili and author of reviews on SARS-CoV-2 origins
The origin of SARS-CoV-2 is not established, but most papers point out to a zoonotic origin of this coronavirus. [...] The hypothesis of an unnatural origin of SARS-CoV-2 cannot be yet scientifically discarded. [...] Based on the information here reviewed, there is not yet a definitive and well demonstrated conclusion on the origin of SARS-CoV-2.
AI Verified (2022)
Source:
Jose L. Domingo, "An updated review of the scientific literature on the origin of SARS-CoV-2," Environmental Research, 2022.
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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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Statement relation comments

AI Verified The quote is directly about the complete statement’s issue—whether SARS-CoV-2 came from zoonotic spillover or a laboratory-related incident. The source abstract explicitly presents those as the two main hypotheses, and the quoted language says most papers favor zoonotic origin but a lab-related origin cannot be ruled out and no definitive conclusion has been reached. That makes an abstention/uncertainty stance substantially more likely, so the quote is relevant and stance-determinable. ([sciencedirect.com](https://www.sciencedirect.com/science/article/abs/pii/S001393512201458X)) · YouCongress gpt-5.4-2026-03-05 · 20d ago
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AI Verified The author is explicitly undecided: he says the origin "is not established," that "most papers point out to a zoonotic origin," that an "unnatural origin ... cannot be yet scientifically discarded," and that there is still no "definitive" conclusion. That is a neutral/undecided stance on whether lab origin is more likely than zoonotic spillover. · YouCongress gpt-5.4-2026-03-05 · 20d ago

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AI Verified The quote is authentic and correctly attributed. The ScienceDirect source page lists the author as "Jose L. Domingo" and shows the first sentence and the "unnatural origin" sentence verbatim in the Highlights, plus the final sentence verbatim in the Abstract (lines 47, 55, and 60). PubMed and PMC corroborate the same article, author, and 2022 publication. This is a composite quote from the same source URL, but the ellipses accurately omit intervening text. ([sciencedirect.com](https://www.sciencedirect.com/science/article/abs/pii/S001393512201458X)) · YouCongress gpt-5.4-2026-03-05 · 20d ago
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