The entire developing world might be incapacitated by the Ebola epidemic. The western world, not so much.
[1] with bleach
But if someone arrives in a US city unwittingly carrying Ebola and gets on a crowded bus or subway car, that's not so easy to track. Likewise if the person goes to a nightclub or other crowded place. Suppose it's a returning American who attends a baseball or football game - the NSA may well be able to ID almost everyone who attended the event, but trying to screen/isolate tens of thousands of people who might have come in contact with an infected individual wandering around a stadium is easier said than done.
http://news.yahoo.com/liberian-ebola-symptoms-dies-nigeria-o...
If an infection does come over, then expect people the laud the NSA's spying because it'll be the thing that makes it possible to identify, target, and quarantine.
However, the more people that are infected, the more chance of Ebola mutating some novel route of infection.
I.e. in the worst case....airborne.
Then it becomes a serious issue in the first world. An apocalyptic issue...