Personally I think it is a way of controlling people.  If their test shows positive you have to be self quarantined for 7 days, if the test shows you have been near someone who tests positive, you have to self isolate again for 7 days, if you test positive (symptoms or not) you have to self isolate for 14 days. At that rate they can keep you locked away for months at a time.  PLUS their tests can be wrong, show positive when not and visa versa, which means they can choose who they want to let out and who they don't. VERY DEMONIC or DemonRat! (as in Democrat)