They just need to stop flights from coming from West Africa. Failing that, people should be thoroughly screened before being allowed to set foot on the plane in Africa. We spend billions worldwide on disease control and epidemic quarantine protocols, how hard is it?
It's not surprising that at least one person in contact with patient zero contracted ebola. U.S. hospitals are in an abysmal state, many are in third world conditions. If ebola hits any of our under-resourced medical facilities, it will spread like crazy.