Mae'r sefyllfa yng Nghymru a ledled y DU yn parhau i fod yn ddifrifol iawn. Heddiw, mae pedwar Prif Swyddog Meddygol y DU wedi cytuno bod y DU bellach ar y lefel uchaf o risg, gyda'r Cydgyngor Bioddiogelwch ar lefel 5.
The situation in Wales and across the UK remains very serious. Today, the four UK Chief Medical Officers have agreed that the UK is now at the highest level of risk, Joint Biosecurity Council level 5.