You can try to muddle the waters all you want.Again, did the virus come from the US? We don't know. Possibly. There is enough circumstantial evidence to build a case. But conclusive proof? Nope. Did it originate in China? There is a strong probability as Wuhan was the first epicenter to diagnose this disease correctly and was the strongest hit early on. But do we know conclusively? No we don't.
In the case of SARS-CoV-2, the researchers suggest that animal was a bat, which transmitted the virus to another intermediate animal (possibly a pangolin, some scientists have said) that brought the virus to humans.The problem for China here is that the science of dissecting genes are global, not under Party control, so now the Party is under face saving mode with sending all these medical teams all over the world. But there is another problem with this tactic -- professionals talks to each other. When it comes to perceptions and politics, the public do not need %100, and in some cases, just %51 will suffice to make a judgement. COVID19 is one of those cases.