64.5% of close contacts that were eligible for follow-up were reached within 48 hours of being identified by a positive case; this equates to 93.2% of those reached being reached within 48 hours
cafwyd gafael ar 64.5% 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 93.2% o'r rheini o fewn 48 awr