I suspect that @maggiekb1 was referring to China as the place where a lot of disease crossovers happen. Wuhan meanwhile is the biggest transportation hub in China. 2+2 = ...
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Or ones with really good viral surveillance. (There's also some evidence pointing to multiple introductions into Wuhan in Dec. 2019).
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Not sure what this evidence is, but assuming natural reservoir, multiple introductions into Wuhan (and not another city) from a 1000 m away in southern China seems unlikely.
End of conversation
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