This beefing up is not good enough. They need to stop taking passengers here who have recently been to the affected countries. Of course, as the disease spreads through other countries that will not catch everyone, and beefing up may be needed to stop any infected from those areas as well.
Just lie our dead patient in Dallas, many people will lie.
"Have you traveled to Liberia, Sierra Leone, or Guinea?"
"No. You can even see my ticket is from Brussels (or Paris, or London)."
Most are making a connection anyways, and they will lie if the choice is between a lie and being turned back.