Community and mass testing includes samples collected at mass testing centres, community testing units and mobile testing units and pre-operative screening tests.
Mae profion cymunedol a phrofion torfol yn cynnwys samplau a gesglir mewn canolfannau profi torfol, unedau profion cymunedol ac unedau profi symudol a phrofion sgrinio cyn llawdriniaeth.