Of the 32,243 close contacts that were eligible for follow-up, 76.7% were reached within 24 hours of being identified by a positive case.
O'r 32,243 o gysylltiadau agos a oedd yn gymwys ar gyfer camau dilynol, cyrhaeddwyd 76.7% ohonynt o fewn 24 awr o gael eu nodi gan achos positif.