The really scary thing is that several thousand people travel between West Africa and Europe every day via air. Nigeria has several flights to London daily. I have no idea if it is communicable via aerosolized droplets from coughing or sneezing but if it is we could have a hell of a problem. I shudder to think of this virus being used as a biological weapon if it can be weaponized which I pray it can not.
It extreme lethality in the past before mass air transport assured it would be local. You stayed local and you died local and thus the vector died.