IANA virologist but my understanding is that a spillover event that infects a large number of people (as would have happened at the seafood market) is considere

IANA virologist but my understanding is that a spillover event that infects a large number of people (as would have happened at the seafood market) is considered unlikely, although this depends on your opinion of how sanitary the market was—reports vary. Of course this doesn’t mean that the virus escaped from the lab, it could well be that a pangolin vendor got the coronavirus and spread it at the Huanan market.