I think the threat of Ebola to most countries is way overblown -- it has been controlled with little difficulty in Nigeria and is now in full retreat in Senegal.  Any cases in Western countries, or even in a country like Vietnam, will be quickly isolated and contacts traced and the infection stopped.  It is nowhere near as dangerous as Bird Flue would be should it ever mutate into a more easily spread infection, and the Ebola virus is not like flue in the way it mutates.

Still, I approve of the scare tactics -- they provide political cover for spending a lot of money in Liberia that would otherwise be hard to get people to support (America's racism among many groups has shown itself here pretty clearly -- they couldn't care less about Africans except where it might put them at risk).