I know that if you test positive at the departure airport, you won't be allowed on the plane. If you test positive at the arrival airport, you will probably be sent to isolation, either at home or somewhere else.
But ... what happens if you test positive at a in-transit airport!? You cannot go home since you have no home and you cannot leave the airport since you have no visa!
In my case specifically, the transit airport will be Doha Airport.. What happens if I test positive there?