Did they bring all their spies home? Then this is WWIII.
Wuhan as a bioweapon virus has been floated, and I have not ruled out that possibility.
I am not aware of our federal government confirming this or that it is being investigated up to this point in time. This may be kept in secret until certain facts are confirmed. But if it were true, and it is no more deadly than the seasonal flu, China has found a way to greatly disrupt the US and world economically, politically, and to divert public attention from Wuhans origins.