If a person receives a positive result from an antigen lateral flow test they are required to complete a standard swab antigen test which would be included in the data presented.
Os caiff person ganlyniad positif o brawf llif unffordd antigenau mae'n ofynnol iddo gwblhau prawf swab antigenau safonol a fyddai'n cael ei gynnwys yn y data a gyflwynir.