This is a precautionary offer to increase their immunity against severe Covid-19 in advance of a potential future wave and to minimise disruption to their education.
Cynnig rhagofalus yw hwn i wella eu himiwnedd yn erbyn COVID-19 difrifol rhag ofn y daw ton arall yn y dyfodol, ac i leihau’r tarfu ar eu haddysg.