I don’t think the African Hot Zone has too many “fledgling economies”. They seem to be mostly moribund economies.
Here’s the deal.....because the news media just aren’t bright enough to figure this out. A number of Africans, especially from Nigeria, but from the other ones to a lesser degree....have bought and paid off the right political characters and gotten visas for themselves and the extended families. So they have set up expensive houses in various southern communities and have the family safely set up. No chance of kidnapping or the typical things you’d run into in Africa. The family members fly back and forth....attending to their business operations there, but enjoy the safety and security of the US. The political folks.....from both parties...enjoy the political donations and ensure that the whole game is played out with no hassle. This is why you don’t really hear much from DC about banning travel. The Republicans might say something but you won’t see a vote carried on this in the House, and I doubt if the Senate....even in January with the majority going that way....will allow this to come up.
On another topic....go back to 1917 and review travel restrictions with the flu. You basically find NO restrictions on the east coast, and only about twelve months into this.....do you find western rural communities which set up roadblocks and asked questions of everyone entering into a county or local city. If you look at flu numbers.....a lot less deaths in the western area of the US. No historian ever picks up this statistic or chats why the heavy eastern death score was the way it was.