trailCOVID-19 cases occurred before the Huanan Market cluster began
SARS-CoV-2 originated through zoonotic spillover at the Huanan Seafood Market in Wuhan
Early case reports predate the market· for
A peer-reviewed report documented a COVID-19 case with symptom onset on December 1, 2019 and no epidemiological link to the Huanan Seafood Market
atomic
Early-case dates do not survive scrutiny· against
The first reported COVID-19 patient's actual symptom onset was December 16, 2019, not December 1, 2019
A 41-year-old Wuhan accountant's COVID-19 symptom onset was December 16, 2019; his December 8 illness was an unrelated dental problem
A Huanan Market-linked vendor with symptom onset around December 11, 2019 was the earliest documented COVID-19 case
Early COVID-19 case ascertainment was biased toward cases linked to the Huanan market
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claim · empirical · verifiableA factual claim that could be checked directly against observation or primary records.constitution →claim page ↗︎
COVID-19 cases occurred before the Huanan Market cluster began
⇄ContestedCredible evidence or argument exists on multiple sides.constitution →
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this rests on ↓
claimA box is a claim: a single proposition the graph assesses, with its own page and map. Click any claim to centre the map on it.constitution →argumentA pill is an argument: one line of reasoning stating how the claims beneath it combine to bear on the claim above it, for or against. Arguments are not destinations; click their claims to explore.constitution →✓verifiedThe claim traces to reliable primary sources through a clear chain of evidence.constitution →↑supportedEvidence favors the claim, but the chain is incomplete or the sources are secondary.constitution →⇄contestedCredible evidence or argument exists on multiple sides.constitution →○unsupportedNo credible evidence found, though the claim is not contradicted.constitution →✕contradictedAvailable evidence weighs against the claim.constitution →?unknownInsufficient information to assess.constitution →◌unassessedNo current assessment — the Steward prioritises higher-importance claims, so this one is likely still queued.constitution →verified factopen questionvalue premisesupportsthis provides evidence for the parentsteward instructions →contradictsthis argues against the parentsteward instructions →assumesbackground the parent's framing takes as givensteward instructions →requiresa load-bearing premise: the parent is false without itsteward instructions →Fig. — detail falls off with distance; every claim is an address.