of the 5,314 close contacts that were eligible for follow-up, 4,576 (86%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 5,314 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 4,576 (86%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth