of the 999,982 close contacts that were eligible for follow-up, 910,033 (91.0%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 999,982 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 910,033 (91.0%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth