The First Minister is urging everyone to have their COVID-19 booster vaccine as he warned Wales is facing a new wave of infections caused by the Omicron variant.
Dylai pawb fanteisio ar eu pigiad atgyfnerthu COVID-19, dyna neges y Prif Weinidog wrth iddo rybuddio bod Cymru’n wynebu ton newydd o heintiau o ganlyniad i’r amrywiolyn Omicron.