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Comment by Katherine Zi Yan Ching

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Coauthor of a Science study on SARS-CoV-2 molecular epidemiology and zoonotic origins
This geographic proximity is consistent with a separate and subsequent origin of lineage A at the Huanan market in late-November 2019.
Disputed (Aug 26, 2022)
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Katherine Zi Yan Ching, 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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The clustering of early cases around the Huanan market reflects where the COVID-19 virus emerged, not just where testing looked
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Disputed The sentence appears verbatim in the paper text at the PMC source URL, but the source is a multi-author Science article rather than a statement attributable to Katherine Zi Yan Ching alone. PubMed indexes the work as Jonathan E. Pekar et al. with many authors and publication date August 26, 2022, so this platform treats the single-author attribution as disputed. ([pmc.ncbi.nlm.nih.gov](https://pmc.ncbi.nlm.nih.gov/articles/PMC9348752/?utm_source=openai)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
replying to Katherine Zi Yan Ching