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Comment by Andrew Rambaut

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Evolutionary biologist at the University of Edinburgh studying viral evolution and phylodynamics
These findings cast doubt on the claim that transitional C/C or T/T haplotypes between lineages A and B circulated in humans, reopening the door to the hypothesis that lineages A and B represent separate zoonotic introductions.
Disputed (Aug 26, 2022)
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Andrew Rambaut, coauthor of Jonathan E. Pekar et al., "The molecular epidemiology of multiple zoonotic origins of SARS-CoV-2," Science, August 26, 2022.
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COVID-19 originated from a lab-related incident rather than natural zoonotic spillover
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Disputed The PMC page itself was not directly fetchable here, but a mirrored PDF of the same Science paper shows the sentence ending with "separate introductions," not the submitted "separate zoonotic introductions," so the stored text is not verbatim. The paper is credited to Jonathan E. Pekar et al.; Andrew Rambaut is one coauthor, not the sole author, so this platform cannot verify it as a single-author quote. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/9348752/)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
replying to Andrew Rambaut