80.9% of close contacts that were eligible for follow-up were reached within 48 hours of being identified by a positive case; this equates to 95.6% of those reached being reached within 48 hours
cafwyd gafael ar 80.9% o gysylltiadau agos a oedd yn gymwys i gael camau dilynol o fewn 48 awr ar ôl cael eu nodi gan achos positif; mae hyn gyfystyr â chael gafael ar 95.6% o'r rheini o fewn 48 awr.