14,518 (67.7%) of the close contacts were household contacts, of which 12,970 (89.3%) were reached and advised accordingly, or had their case otherwise resolved.
roedd 14,518 (67.7%) o’r cysylltiadau agos yn gysylltiadau cartref, a chafwyd gafael ar 12,970 (89.3%) yn llwyddiannus a rhoi’r cyngor perthnasol iddynt, neu cafodd eu hachos ei ddatrys fel arall