Mae'r rheoliadau hefyd wedi'u diwygio i ymestyn yr eithriad fel ei fod hefyd yn berthnasol i gysylltiadau agos – sydd wedi cael eu brechu’n llawn – personau sy’n profi’n bositif am y coronafeirws. Nid oes raid i'r rheini sydd wedi cael brechlynnau cymeradwy dramor hunanynysu mwyach os byddant yn cael eu hadnabod fel cysylltiadau agos.
The regulations are also amended to extend the exemption for fully vaccinated close contacts of persons who test positive for coronavirus. Those who have had approved vaccinations overseas no longer have to self-isolate if they are identified as a close contact.