of the 1,032,146 close contacts that were eligible for follow-up, 939,449 (91.0%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 1,032,146 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 939,449 (91.0%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth