I'm not sure if anyone has thought of this, but I sure hope someone has. So. What is the one thing that doesn't need regulation or a passport to cross any border? Money. Literally money has more rights than people do when it comes to travel, it could be in someones pocket, their bag, hell the wind could carry a dollar bill into a planes landing gear and it could stow away (kind of funny talking about a dollar bill like it's a criminal).
Which brings me to my point, what are the chances someone with ebola sweat or something onto a dollar, and it circulated somewhere else in the world, and someone with a cut on their finger touched it.
Is the world fucked?