of the 17,210 close contacts that were eligible for follow-up, 15,718 (91.3%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 17,210 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 15,718 (91.3%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth