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Comment by Rosemary Sang

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Virologist and chief research officer at the Kenya Medical Research Institute Centre for Virus Research; coauthor of the 2026 Nature commentary on COVID-19 origins
In the 78-page document, we determined that most of the peer-reviewed scientific evidence supports the hypothesis that SARS-CoV-2 has a zoonotic origin, meaning that it came from an animal.
Disputed (Feb 24, 2026)
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Rosemary Sang, coauthor of "COVID's origins: what we do and don't know," Nature, February 24, 2026.
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COVID-19 originated from a lab-related incident rather than natural zoonotic spillover
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Disputed The quoted sentence appears verbatim on the cited UNMC page, which is a fair-use excerpt published on February 25, 2026. But the underlying Nature Comment is dated February 24, 2026 and is by 23 named coauthors; Rosemary Sang is listed as one coauthor, not as the sole author. Because this platform cannot verify a multi-author article as a single-author quote, the attribution to Rosemary Sang alone is disputed. ([unmc.edu](https://www.unmc.edu/healthsecurity/transmission/2026/02/25/covids-origins-what-we-do-and-dont-know/)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
replying to Rosemary Sang