of the 12,857 close contacts that were eligible for follow-up, 11,434 (89%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 12,857 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 11,434 (89%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth