Your post was the first that i had heard of the 72 hr. quarrantine. That seems a bit severe, but we don't know the circumstances. Either way the couple should have been informed, i wonder if they returned to the doctor to get released?
I do know how the quarrantine works from first-hand experience. The normal quarrantine is for 24 hours, after the initial 24hours you must go back to the doctor -get evaluated and he/she has to sign a form releasing you from the quarrantine.
I had never heard of your sign and sail pass being deactivated, but i suppose its a good idea so that you would stay put.