From the 2nd world war, major countries like North Korea, Iran, China, USA and Russia, have had surveillance of enemy and potential enemies from spy planes to satellite searching daily!
If or when countries like China, a confirmed potential enemy, we would have known at least a year in advance.
So why did it take trump so long to admit his mistake?
From at least December 27th 2019 to May 1st 2020!
trump says he has evidence coronavirus came from a Chinese lab, but he can't reveal it?
David KnowlesEditor,Yahoo News•April 30, 2020