“Rydym hefyd yn cynghori pobl yng Nghymru i beidio â theithio i’r rhannau o Loegr a’r Alban lle mae’r gyfradd heintio yn is, i helpu i’w hatal rhag mynd â coronafeirws gyda nhw.
“We are also advising people in Wales not to travel into those parts of England and Scotland where the infection rate is lower, to help prevent them taking coronavirus with them.