of the 317,364 close contacts that were eligible for follow-up, 290,286 (91%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 317,364 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 290,286 (91%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth