In Italy people were contaminated even earlier than that, apparently [4].
These are not wholly surprising because, again it is likely that the virus had been circulating for some time in humans before it exploded and was detected. It is quite contagious but many people do not experience any symptoms or only mild, common symptoms, which IMO makes it relatively easy to go undetected until it goes out out of hands, as it did in Wuhan first.
It's good to ask for proof but then you should ask for proof of all claims, not only the ones you do not like.
[1] https://www.bbc.com/news/world-europe-52526554
[2] https://www.sciencemediacentre.org/expert-reaction-to-report...
[3] https://www.nbcnews.com/news/world/new-evidence-race-find-fr...
[4] https://www.reuters.com/article/us-health-coronavirus-italy-...
> His previous experience has shown that such antibody tests for the coronavirus' RBD can create a lot of false positives, Rutherford told Live Science. And because this is "such an unexpected finding," it should be confirmed with other antibody tests such as those that look for antibodies against another one of the coronavirus' proteins, an outer coat called a "nucleocapsid," which is also unique to the novel coronavirus, he said.
> Still, "it's not totally outside the realm of possibility," that the virus circulated in Italy earlier than thought. because there is a lot of travel back and forth between China and Italy, especially northern Italy, he said. But considering the earliest COVID-19 case in Wuhan was reported to be in November, "it really gives me pause to say let's really make sure we got this right before we try and explain it," Rutherford said. [0]
[0] https://www.livescience.com/coronavirus-circulating-italy-ea...
I'm puzzled by your attitude and unclear about your aim but you do what you want.
Seems like you are trying to ridicule me just because you disagree with me.
'Wuhan Institute of Virology' (China's only BSL4 lab) is less than 14km from 'Huanan Seafood Wholesale Market'.
The 'Wuhan Centre for Disease Prevention & Control' is 1.4 km from the 'Huanan Seafood Wholesale Market'.
Both are public institutions with published research on both virus classification and gain of function experiments.
This is circunstancial evidence. Unlike the previous origin investigation for SARS-Cov1, there has been little transparence or effort to investigate the origin of SARS-Cov2.
Let's agree to disagree. If indeed the origin is a Southern China zoonotic event, which then happened to have a superspreader event in Wuhan, then it is in the interest of the Chinese government to investigate this and disclose this evidence to dissolve international doubts and concerns.