"All countries could stop using their armies to fight each other and send them there to isolate each and every village from each other and every manageably-sized urban area from each other and close the borders tightly to isolate the affected countries from the rest of West Africa and man the stations in the transit areas of airports where anybody coming from there should be isolated from the country they are trying to enter for at least 3 weeks."

They could. But America will give up its fixation on guns L O N g before that ideal happens. Just ain't gonna happen.