And our level of technology is not advanced enough to be able to designer engineer such a virus. Neither is China's (whose technology is all stolen from us anyway).
As a researcher trained in genetic engineering, I can think of a few approaches if I wanted a depopulation vaccine. And I'm not going to say what those approaches are.
I am aware that the technology is not there yet.
It’s about the logic. It is not logical to create a weaponized vaccine for a virus that is doing the job already.
Again, I note, Hillary was supposed to be president and we wouldn’t have a vaccine if she were. Trump and his Operation Warp Speed did the world a solid.