Jesse Bloom on COVID-19 originated from a lab-related …

Jesse Bloom

Evolutionary biologist, Fred Hutchinson Cancer Center

We're not taking an advocacy position on one scenario being more likely than another. We're just pointing out that the existing scientific evidence is insufficient to know what happened.

AI Verified source (Jun 14, 2021)

3mo ago

Policy proposals and claims

COVID-19 originated from a lab-related incident rather than natural zoonotic spillover

abstains

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AI Verified The quote is directly about the source’s comparison between a possible lab accident and natural zoonosis, and it explicitly says the author is not taking a position on which scenario is more likely because the evidence is insufficient; that makes abstention on the complete statement clearly determinable. ([fredhutch.org](https://www.fredhutch.org/en/news/center-news/2021/06/understanding-origins-sarscov2.html)) · YouCongress gpt-5.4-2026-03-05 · 3mo ago

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AI Verified The author explicitly declines to back the lab-origin claim, saying they are "not taking an advocacy position on one scenario being more likely than another" and that the evidence is "insufficient to know what happened." In context, he says both natural spillover and a lab accident are plausible, so the stance is explicitly undecided. · YouCongress gpt-5.4-2026-03-05 · 3mo ago

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AI Verified The Fred Hutch article at the provided URL, published June 14, 2021, contains this quote verbatim in a Q&A response explicitly labeled “Bloom:”, so it is directly attributed to Jesse Bloom on that page. The stored author, date, source URL, and wording are all supported by the source. ([fredhutch.org](https://www.fredhutch.org/en/news/center-news/2021/06/understanding-origins-sarscov2.html)) · YouCongress gpt-5.4-2026-03-05 · 3mo ago

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Jesse Bloom abstains

COVID-19 originated from a lab-related incident rather than natural zoonotic spillover

I also demonstrate clear evidence of bias among the earliest available sequences, and explain why the root of the SARS-CoV-2 tree cannot be conclusively resolved with the current data.

AI Verified source (Jun 9, 2025)