Of the 31,408 close contacts that were eligible for follow-up, 62.0% were reached within 24 hours of being identified by a positive case.
O'r 31,408 o gysylltiadau agos a oedd yn gymwys ar gyfer camau dilynol, cyrhaeddwyd 62.0% ohonynt o fewn 24 awr o gael eu nodi gan achos positif.