That won't happen, world powers may dump China and move production out of China if they are found of deliberately inflicting this pains on the whole world to gain economic dominance. You can't use virus that kills thousands and shutdown economy and people to dominate the world space. The people should violently react or they are docile.
What if this virus is not proven produce by China? the thing is some countries are assuming that it was China who created the virus but they cannot prove it, all of what they are saying is based on speculation only. So let us look the world now, which country is standing tall? I see China for now, and no evidence they can't sanction China.
Agreeing that other countries have no evidence and have yet to find the source of this disease, blaming China may be unfounded but there is no evidence that does not mean China will escape responsibility, China is the first country to spread the disease, other countries may not punish directly but they will certainly have a gap with China. These policies may not appear right away, but until the epidemic ends, the total losses are calculated, China's economy will probably be affected when no one wants to cooperate
We really don't know what country started this virus, what we know is that China has the biggest number of people infected with the virus before and they were able to defeat it, so the rest of the world is now blaming china because they can't contain the virus, this accusation is baseless if not proven but China will surely improve their economy as they have recovered first in this crisis.