trailDecember 2019 COVID-19 cases were geographically concentrated near the Huanan Seafood Wholesale Market
Early COVID-19 cases cluster spatially around the Huanan Seafood Wholesale Market
Worobey et al.'s early-case clustering around the Huanan market persists under a social-media-mobility null instead of a population-density null
Ascertainment bias and spatial-statistics critique· against
Early COVID-19 case ascertainment was biased toward cases linked to the Huanan market
Early Wuhan COVID-19 case definitions required or emphasized an epidemiological link to the Huanan Seafood Market
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
A spatial statistical test does not validly establish non-random clustering of early COVID-19 cases around the Huanan Market
The population-density null hypothesis used in the Huanan market spatial clustering test is statistically inappropriate
✓
claim · empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →claim page ↗︎
December 2019 COVID-19 cases were geographically concentrated near the Huanan Seafood Wholesale Market
↑SupportedEvidence favors the claim, but the chain is incomplete or the sources are secondary.constitution →
2depended on by
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.