Two negative lateral flow tests taken 24 hours apart should be taken on day five and six to help determine if they are still infectious and potentially pass COVID-19 to others.
Dylent gymryd dau brawf llif ochrol 24 awr ar wahân ar ddiwrnod pump a chwech i weld a ydynt yn parhau i fod yn heintus ac yn gallu trosglwyddo Covid-19 i eraill.