of the 569,434 close contacts that were eligible for follow-up, 532,210 (93.5%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 569,434 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 532,210 (93.5%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth