of the 31,301 close contacts that were eligible for follow-up, 26,736 (85.4%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 31,301 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 26,736 (85.4%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth