Basic infection control procedure would be to leave the people where they are; bad PR, good drills.
This, I’m really sorry but it is a a poorly understood virus at present. You have to stay put. Remember, humans fail, all the time. Apparently the coach drivers for the repatriated were to go home and self quarantine for two weeks. So one coach driver gets to 12 days and thinks I’m fine, I’ll go down the pub tonight for a few pints………
The opening chapters of The Stand cover this quite well.
I don’t believe for a minute the official Chinese figure of 5% mortality, figures of 20% are leaking out.
But its too late (as I stated earlier), its loose.