Hasn't Lagos already banned flights out of these affected countries?
Logan and T.F. Green, for example.
T.F. Green Airport to start offering European flights
http://m.wcvb.com/news/tf-green-airport-to-start-offering-european-flights/27836790
"Rhode Island (specifically Providence) has the highest Liberian population in America."
http://www.welcomingri.org/tag/liberian/