Well, Germany announced that it accepted a patient with Ebola.[1] I guess it's not completely out of the question now?
Wouldn't it make more sense to go where the virus is and not bring it home?
[1] http://www.telegraph.co.uk/news/worldnews/europe/germany/109...
At some point, you have to act upon instinct and that's fine. And in the case of a serious pandemic, we'll all die or end up in the stone age within 5 - 10 years anyway.
The chance of that happening is remote in any particularly decade the chance of something worse that would "put us back to the stone age" happening is incredibly unlikely.
Hell Europe survived the black death and by some counts that took out a third of the population of some countries.
It's not sunshine and flowers but it's not a world ender either.
But that doesn't mean a mutated strain could potentially befall the whole world. The same goes for the more terrifying types of the flu. There is always the potential for a deadly and extremely contagious pathogen to develop.
So what to do in a pandemic situation? I'm hesitant to admit it, but basically the survivalists have it right: hole up somewhere off the beaten path and avoid all outside contact, that potentially includes all kinds of animals like birds and livestock. Then you'll have to wait until a vaccine is developed. If a vaccine is feasible.