of the 760,558 close contacts that were eligible for follow-up, 689,161 (90.6%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 760,558 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 689,161 (90.6%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth