Maybe? Maybe?! Try like it should have been done already and should be done now, today, instantly.
There is no maybe about it.
I suspect they know that it’d never be effective. Flights would still continue from one African country to another. You’d skip over to Egypt, and catch a flight into Paris, and eight hours later be in Atlanta. So, it’d have to be an absolute ban on all airlines, period, within Africa for at least six weeks. Fat chance.
I’d also take a guess that some nutcase has already acquired a specimen or two, and could just drop some stuff into the subway system of DC, and have a 1,000 people dead from this within a month.