How could USA sue China for Covid, when China successfully kept Covid contained for three months before it spread worldwide, and it was the USA and western countries that reacted wonky and never had it under control for even an hour once it reached their shores?
If anything, it should be the other way around: A country that successfully and repeatedly contained and controlled the spread of infection should sue countries that at first denied Covid, then did not trace or test properly, did not shut down international or domestic travel effectively, could not get their own citizens to vaccinate or mask up, and ended up costing the originating country more economically as an industrial supplier than the consumer countries that still fail to get the virus under control with their many but clearly ineffective policies.
If a similar virus emerged in USA or a western country, it would reach China far earlier than the three months it took the virus to get out from China.