Of the 33,995 close contacts that were eligible for follow-up, 70.0% were reached within 24 hours of being identified by a positive case.
O'r 33,995 o gysylltiadau agos a oedd yn gymwys ar gyfer camau dilynol, cyrhaeddwyd 70.0% ohonynt o fewn 24 awr o gael eu nodi gan achos positif.