of the 17,024 close contacts that were eligible for follow-up, 13,518 (79%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 17,024 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 13,518 (79%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth