MichaelStJules comments on What is the likelihood that civilizational collapse would directly lead to human extinction (within decades)?

[MichaelStJules]

Maybe there could be groups of countries that agree to coordinate on this, and isolate themselves physically from countries outside their own groups?

I guess there might be ways to deliver disease through the air or wild (wild animals), or just sneaking into a country. The solution to that is domes. :P