23,002 (74.0%) of the close contacts were household contacts, of which 19,552 (85.0%) were reached and advised accordingly, or had their case otherwise resolved
roedd 23,002 (74.0%) o’r cysylltiadau agos yn gysylltiadau cartref, a chafwyd gafael ar 19,552 (85.0%) yn llwyddiannus a rhoi’r cyngor perthnasol iddynt, neu cafodd eu hachos ei ddatrys fel arall.