[quote=idlehands]
and people traveling all over the world is a lot more common.
[/quote]

I read something once that said that due to the wide spread trade routes established after the Mongolians created their massive empire, it paved the way for the black plague to spread so far across Europe and Asia. Had that not happened and the nations they subjugated would have remained largely isolated, it wouldn't have had such a huge impact.

[quote=Larfleeze]
I bet it's Cordyceps brain infection. One minute you feeling a little sick, the next, fungus is shooting out your brain and you're clicking your teeth at everyone.
[/quote]

I like that scenario.