[ghaff]

I can't help but feel that there is some mild trolling going on this thread :-) If not that, there are at least a couple of people who are seriously optimistic about their personal invulnerability in the absence of modern medicine, healthcare, and public health practices.

[crusso]

I think that things like herd immunity just aren't intuitively understood or respected by the people who think that just because they haven't had a health emergency in the modern world they haven't benefitted from their existence in the modern world.