[Clay Moore]

They were likely put in a respiratory isolation room. Supposedly the filtration system is isolated to that room only and is somewhat low pressure compared to the rest of the hospital so that when the door is opened, air comes into the room.

That is how it was explained to me.

[ProtectOurFreedom]

After just finishing "The Hot Zone," simply respiratory isolation is nowhere near sufficient. The Army infectious disease experts at Ft. Detrick required the highest level of bio-safety containment called "Biosafety level 4." There's a short article on Wikipedia and at the CDC's Laboratory Biosafety Level Criteria: BSL-4 on page 45.

The book's author and various researchers have donned BSL-4 rated protective gear to enter Kitum Cave in Africa which is strongly suspected to be a reservoir of the Ebola virus.

I'm no bio-safety expert (heck,I couldn't even pronounce it until Ebola erupted), but it seems the U.S. is taking a mighty cavalier attitude to the risks of this disease that turns your internal organs into puddles of mush.