From 23 June, the number of occupied invasive beds began to increase, however, the number has seen an overall decrease since 28 July.
O 23 Mehefin, dechreuodd nifer y gwelyau cymorth anadlu mewnwthiol sy’n cael eu defnyddio gynyddu, er hynny, mae’r nifer wedi gostwng yn gyffredinol ers 28 Gorffennaf.