The Future of Human Migration

[GGT]

Maybe it will depend on health status and carriers of infectious diseases?

Sounds plausible. We've done the same sort of thing for quarantines of fruits and vegetables that bring along microscopic "aliens", non-natives that can decimate local species. Hawaii has a super strict policy toward introducing domestic pets and vegetation because of microscopic pests that tag along.....

It certainly costs a lot more in the long run, to try and get rid of non-native species that have no natural enemy but cause havoc, than keeping them out in the first place. Japanese beetles, the dandelion, kudzu, hemlock woolly adelgids....foreign species.

It isn't just science fiction any more. If someone infected with small pox entered any country, it could be a disaster. Because small pox was considered eradicated, not many have the vaccination.

Or if migrants had a virulent form of resistant Tb, everyone on the plane could be infected, and anyone in contact after they land could become ill or a silent carrier.

Maybe our future "papers" or scans will be about bacteria or viruses?

[Ominous Gamer]

I favor the Madagascar approach.

Spoiler:

but seriously, thanks to incubation periods, public hysteria, and so few countries having controlled borders....best we can hope for is quality containment after the fact

[']['ear]

We're trying to contain quality?