From 23 June, the number of occupied invasive beds began to increase, however, the number has fallen over the last week.
O 23 Mehefin, dechreuodd nifer y gwelyau cymorth anadlu mewnwthiol sy’n cael eu defnyddio gynyddu, ond mae’r nifer wedi gostwng yn ystod yr wythnos ddiwethaf.