of the 1,118,789 close contacts that were eligible for follow-up, 1,013,006 (90.5%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 1,118,789 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 1,013,006 (90.5%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth