Gan mai dim ond ddiwedd yr haf y cafodd y rhan fwyaf o oedolion ifanc eu hail frechlyn COVID-19, caiff y manteision o roi pigiad atgyfnerthu i’r grŵp hwn eu hystyried yn ddiweddarach gan y JCVI, pan fydd mwy o wybodaeth ar gael.
As most younger adults will only receive their second COVID-19 vaccine dose in late summer, the benefits of booster vaccination in this group will be considered at a later time, by the JCVI, when more information is available.