Intergalactic disease among humans

[Fred Brackin]

Originally Posted by Tyneras

Well, aren't most of the humans in the SG universe in small tribes or tiny, primitive cities? .

Yes, but they also normally are exposed to gate travellers. Especally true in Pegasus. SG-1 found a few civilizations that had lost contact with gate travel.

There's hyperspace travel too so the "isolation" component is imperfect. It's more like Earth has been the isolated one.

It might even be possible that the Stargate has a "bio-filter" like Trek transporters with the few cases we've seen of disease being isolated failures of the system.