The initial African carrier wouldn’t have to make it all the way here. Just to this hemisphere would do the trick. They would infect their fellow travelers before they crashed out somewhere. The fellow travelers would probably make it. If not, they’d in turn infect others.
Just getting it to this hemisphere, in Mexico or Central America, would suffice.
Better the slow boat to China than the jet plane to anywhere.
In any case, they’ve already let it come here. And with their fecklessness, it’s hard to be confident that it will be contained.
They’ve brought one case to within a hundred miles of my house. Argh.