“They should be strictly quarantined.”
Yes, they should be.
We put into place a list of countries from whom we will not accept people for what purpose — politics or saving lives?
Well, we have our answer. Just pray not too many unnecessary deaths result from this dereliction.
...and recent arrivals from those countries should be put in isolation wards in hospitals for two weeks, symptoms or no symptoms.
When I got Hep A in Mexico and returned to the states, I was immediately hospitalized in isolation for two weeks. That was back in 1977.