True, but traveling to/from and hanging around airports might get you killed.
We have a friend on her way to South Africa -- tried to discourage her.
Although many people with ebola have taken flights, not one person has contracted ebola on a flight to date and there was only one incident where anybody caught ebola in an airport. That took place in Lagos, Nigeria when a gentleman arriving from Liberia started vomiting blood in the terminal, and janitors and medical personnel responded without taking basic precautions.
Your friend's chances of catching ebola while traveling to a country without any ebola cases whatsoever are essentially zero. She has a greater chance of being struck by lightning on the way to the airport -- that's literally the case, not a metaphor. There are plenty of health and safety concerns for travelers to South Africa and ebola isn't one of them.
If your friend notices someone vomiting blood in the terminal, she should alert authorities and not clean it up herself. Hopefully that’s common sense.
The other thing to watch out for is traveling to areas that could quickly see their h.c. system crumble if there is any kind of panic. I don’t think S. Africa qualifies (I was impressed when I went there recently), but in general it is a good thing to consider when traveling. You don’t want to have a simple accident turn into a life-threatening situation because the hospitals are closing their doors because their staff is all at home.