of the 33,498 close contacts that were eligible for follow-up, 28,853 (86%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 33,498 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 28,853 (86%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth