of the 479,037 close contacts that were eligible for follow-up, 456,159 (95.2%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 479,037 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 456,159 (95.2%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth