of the 366 close contacts that were eligible for follow-up, 309 (84%) were successfully contacted and advised accordingly, or had their case otherwise resolved
o blith y 366 o gysylltiadau agos a oedd yn gymwys i'w holrhain, cysylltwyd a chynghorwyd â 309 (84%) yn llwyddiannus, neu chafwyd eu hachos ei ddatrys yn syth