While not COVID-19 specific, Cwm Taf Morgannwg has not submitted closed pathways data since September 2018 (Cwm Taf health board between September 2018 and March 2019).
Bu 6 achos o fynediad anghyfreithlon at ddata a bu ond y dim i ddeg achos arall ddigwydd yn ACC yn ystod 2019-20, pob un ohonynt yn rhai bychain.