EpiStack

H-14 - The market environmental pattern reflects wildlife-associated emergence at the Huanan market

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Properties12
type
hypothesis
id
H-14
state
active
question
Do the Huanan market environmental data indicate the market was the site of a wildlife-to-human spillover?
statement
The Huanan Seafood Market was the primary site at which SARS-CoV-2 first emerged into humans — the geographic epicenter and origin of the outbreak, via the live-wildlife trade — rather than a downstream venue amplifying virus already circulating in the Wuhan community; supported jointly by the environmental viral positives concentrated in the wildlife wing and co-located with susceptible-wildlife genetic material, the presence of both early lineages A and B at the market, the market-associated genomes' tMRCA matching the pandemic tMRCA, and the early-case geography centering on the market.
cluster
HC-3
source
S-16 - Liu, Gao et al. — Surveillance of SARS-CoV-2 at the Huanan Seafood Market (Nature)
locator
  • S-16: Results/Discussion, spatial and metagenomic analysis
  • S-17: Abstract; Discussion; conclusions
  • S-35: Results (genetic diversity consistent with market emergence); Discussion
  • S-13: first-425-cases market linkage (initial epicenter, H2H takeover)
  • S-19: pre-pandemic Wuhan wildlife-trade inventory (viable route; pangolins/bats not traded)
merged_from
additional_sources
generalization_note
Widened from the S-16 environmental-pattern reading to the general 'Huanan market was the primary wildlife-to-human spillover origin/epicenter, not a downstream amplifier' claim. 4a absorbed H-21 (Worobey case-geography epicenter) and H-24 (Crits-Christoph market-emergence vs community-precirculation). 4b additionally absorbs, for MECE clustering: H-10 (origin-or-amplifier-agnostic epicenter — logically the disjunction of the wildlife-spillover and amplifier answers, so it cannot be a mutually-exclusive co-member) and the wildlife-vector sub-claims H-23 (raccoon-dog intermediate host), H-25 (pangolins/bats not the vector) and H-26 (wildlife trade a viable route). These elaborate the wildlife-spillover mechanism rather than answering the market-role sub-question separately; a standalone intermediate-host cluster would double-count the species-correlation evidence (O-40/O-50/O-51), which instead discriminates H-14 vs H-15 inside HC-3 at step 5. The species-level resolution (which animal) is deliberately given up at member grain.
quote
genetic diversity is consistent with market emergence with increased SARS-CoV-2 positivity near and within a wildlife stall

The wildlife-market-emergence reading of the environmental dataset. The China CDC authors themselves state the data only that the market was a site of early SARS-CoV-2 presence and are cautious about asserting origin.

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Show model graphinteractive Bayesian view — separate from the graph above
added after the FLF submission deadline

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