Of the 30,105 close contacts that were eligible for follow-up, 72.1% were reached within 24 hours of being identified by a positive case.
O'r 30,105 o gysylltiadau agos a oedd yn gymwys ar gyfer camau dilynol, cyrhaeddwyd 72.1% ohonynt o fewn 24 awr o gael eu nodi gan achos positif.