Mae Dr Frank Atherton, y Prif Swyddog Meddygol, wedi ysgrifennu at bob gweithiwr proffesiynol yng Nghymru i dynnu sylw at ganllawiau clinigol NICE ar gyfer COVID hir, gan eu hannog i sicrhau eu bod yn gyfarwydd â llwybr lleol eu Bwrdd Iechyd ar gyfer cael mynediad at wasanaethau.
Dr Frank Atherton, Chief Medical Officer has written to all health professionals in NHS Wales to highlight the NICE clinical guideline for Long COVID and urging them to  familiarise themselves with their health board’s local pathway for accessing services.