Of the 24,596 close contacts that were eligible for follow-up, 71.5% were reached within 24 hours of being identified by a positive case.
o'r 24,596 o gysylltiadau agos a oedd yn gymwys ar gyfer camau dilynol, cyrhaeddwyd 71.5% ohonynt o fewn 24 awr o gael eu nodi gan achos positif.