Both the Ebola and Marburg viruses both seem to live in bats in Africa and periodically transfer to humans - given it's happening in one place means it's not surprising it happens elsewhere
There's genetic evidence that the first cases were not from Wuhan [0]:
> Of 23 samples that came from Wuhan, only three were type A, the rest were type B, a version two mutations from A. But in other parts of China, Forster says, initially A was the predominant strain. For instance, of nine genome samples in Guangdong, some 600 miles south of Wuhan, five were A types.
I would be willing to bet that if Ebola were a frequent issue in a country that had the ability to construct a world-class virus research center, there would be a research center very close to the locations where Ebola had a natural reservoir.
No matter how hard you yell it, correlation is not causation (and even when there is causation, the direction of the causation isn't always obvious).
