After reading about how Ebola kills someone, I say we should probably be pretty fucking worried about it, just in case. Overkill in containing is worth it or else there's a possibility of the world getting Black Plague'd again. That's probably what this would be if it weren't for modern medicine and quarantine practices.
Also I heard the guy who died in the US, they gave him antibiotics which probably raped his immune system and didn't have any effect at all on the virus.