We do know how to put a stop to it, it's quite easy, all it takes is bio-containment level 4 procedures, that should be easy to slap together in every international airport, seaport, and border crossing to the US. Look, I'm not going to fear monger here, but the fact is that if significant numbers of infected individuals start traveling around the globe we will not be able to maintain containment for long, even with all the resources that ultra-rich 1st world countries have at their disposal. How many beds do you think there are in the entire US that can safely treat Ebola ? I'd be shocked if it's over 1,000 and if the situation in western Africa doesn't change we will very soon see Ebola victims numbering in the millions (by the CDC's own estimates, 1.4 million by the end of January).
We need to stop pretending that Ebola is no easier to catch than HIV or other pathogens that are carried by the same bodily fluids, those diseases don't typically cause you to leak and eject the infected material all over yourself and the room you are in. A nurse in Spain got sick after possibly touching her face while removing her hazmat suit, when was the last time you heard about someone catching HIV the same way? This whole idea that Ebola is so hard to spread you'd have to be stupid to catch it needs to stop; it's wrong and it's dangerous and it leads to wonderful things like people not bothering to put on gloves and mask to go into a confirmed Ebola patient's apartment (thankfully that deputies tests have come back negative).