Isn't Goodluck Jonathan the president of Nigeria?
It's not god's wrath we're seeing there. Diseases like Ebola are simply caused by viruses which are part of the wide spectrum of life here on Earth.
I don't think praying is a good idea, keep your head down by all means but don't attract the attention of god, we all know what happens if you do that :o)
No doubt it'll shorten the time for the lab folk to find a cure / preventative.
But to be sure they should pray for a cure in one country and pray not to find it in another, then you'd have something to compare and convince yourself.