Dim ond dangos a oes gan rywun y feirws mae’r prawf antigen presennol, a dim ond os oes gan rywun symptomau coronafeirws mae’n cael ei ddefnyddio, neu wrth fyw gyda rhywun sydd â’r symptomau hyn. Mae Cymru wedi bod yn sgrinio staff rheng flaen gyda’r prawf hwn am nifer o wythnosau ac mae’n darparu mwy o brofion a chanlyniadau bob dydd.
The current antigen test can only tell if someone has the virus and is only used if someone has symptoms of coronavirus or is living with someone who has those symptoms. Wales has been screening frontline staff with this test for a number of weeks, and is providing more tests and results every day.