There will always be those people, of course. But, human migration patterns are far more economical than that, and, more importantly, the psychology of negative conditioning has fundamental limits. The fact of the matter is humans are social, or pack, animals. They dont necessarily need to be in physical contact, but they still need to interact with other humans to properly function. As nice as it would be to say that the predicted staggering death toll will be a wake up call for Americans, we were well aware of what was going on in Italy and we still didn't change our behavior, and it isn't likely to change even with catastrophic devastation. You have to replace the social aspect while maintaining the physical separation.