O-20 - Positive environmental samples contained abundant genetic material from wildlife species
The metagenomic reads place substantial wildlife biological material in the same market section as the viral contamination; the fine-grained per-swab co-location of specific susceptible species with viral reads was the object of later external reanalyses.
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Why this is evidence
Viral positives co-located with susceptible-wildlife genetic material is predicted by H-14 (animal source) but not required by H-15 (human-deposited virus need not track wildlife material), favoring H-14 over H-15.