[camle]

somehow i doubt this is feasible, given the nature of the disease...and the source

[flamberge]

An infected Ebola victim would probably not survive long enough to make the trip from Africa to the United States unless they got on a plane shortly after the exposure.

It could be done. Patrick Sawyer tried to do just that. Perhaps it is time to shut down direct air travel from Africa to the rest of the world.

Blood and other body fluids could very well be packed in liquid containers and remain infectious for several weeks. This is plenty of time to smuggle them across a border by land transport. The unfortunate customs inspectors who found such items would become the next vectors.

The principle risk is blowback to the perpetrators and their backers. Unless they are perfect in their handling procedures, they will likely become "work-accident" victims before they can deploy their attack.

That is probably the limiting factor right now.