Well imagine a room of quarantined people. Then one becomes sick, now they`re all exposed along with the quarantine workers. Better than the public at large, yes, but its still here.
Look how much trouble disinfecting the plane Vinson flew has cost, and all the people who flew after her? You see why the COMMERCIAL flights and the aircraft used are also a danger? Please read this: http://www.phac-aspc.gc.ca/lab-bio/res/psds-ftss/ebola-eng.php and this: http://www.nature.com/srep/2012/121115/srep00811/full/srep00811.html
They say that Ebola Zaire has a ID/50 or infectious dosage 50% probability of 1 to 10 virons, thats horrific.
Undoubtedly, stopping the flights would be best.
It will not happen, however. Not without a military coup in the United States.
My advocacy for quarantine is premised on the idea that it could actually happen.