Dont worry, its going to spread. disease always does. You can feel safe, but it will get to you, so no one outside the americas feel smug this is happening here.
... Other than that, my thought about this is what it always is. Gather up anyone infected, put them all in a single place, kill them all or let them live in total isolation till they die out completely (same thing) and wait and see if evolution take its course (i.e. humans are born resistant to it) or if they all die before it. I dontk now how many people it is, but whatever it is, its not too high. world population could do with some pruning,a nd I dont see a WW2 any time soon that would do that job for us.
but no one ever likes to hear that idea. We're apparantly above outright shooting someone but doent mind passing off a potential death sentence/life altering change as long as we get our willies wet/holes sufficiently plugged.