Furthermore, all contacts will still be provided with advice to stay vigilant for symptoms and how to reduce the chance of passing Covid-19 onto others, such as paying extra attention to hand washing.
Mae'n cyfuno'r ffactorau hyn mewn matrics sgorio er mwyn nodi risg unigolyn o niwed o haint COVID-19 ac yna'n awgrymu camau y gall yr unigolyn a'r rheolwr llinell eu cymryd i leihau'r risg.