That can really only happen in the petri dish in West Africa. There is such a small chance of that happening, it requires millions of new cases and even W. Africa is probably not going to get to that level. If it does happen (really bad luck) it will spread like wildfire over there and that would be very noticeable.
and when flu season sets in for good and people start hacking and sneezing - if any of them are ebola infected- imagine the free ride ebola virus gets with those aerosolized body fluids