There was some interesting article about possibility that this virus is artificial. Author came to conclusion that it's possible, but there's no way to prove that (other than insider leaking strong proofs, of course). Modern virusology laboratory can create such a virus indeed and it'll be indistinguishable from a wild virus.

Unfortunately this article is in Russian, I'll provide google translate link, but it probably will be translated with errors.

https://translate.google.com/translate?sl=ru&tl=en&u=https%3...