of the 10,516 close contacts that were eligible for follow-up, 8,770 (83%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 10,516 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 8,770 (83%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth