Not shaking in my boots at this time, but it has the potential to continue into new ground.
Perhaps the best way to describe my concerns is that while ebola is a spark, there is very little kindling here that could burst into fire. So many things go against there being a significant epidemic here that the odds are severely stacked against it.
Africa, on the other hand, has endless reasons for it to be a problem there. But even in Africa, its potential is limited. Were it a serious threat *there*, by now, millions of people would be sick and dying, not just a thousand and a third.
I like the thought problem that, if you had a billion people, and one million of them died every day, how long would it be before they all died? The easy answer is one thousand days. Or 2 years and about 9 months.
And there are about 7 billion people on Earth. To kill them all at 1 million a year, it would take 19 years and 3 months. Assuming nobody had any more children during that time.