of the 1,156 close contacts that were eligible for follow-up, 1,011 (87%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 1,156 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 1,011 (87%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth