We have a 50% gateway in place for moving from one cohort to the next and expect to start inviting the under 50s for their first doses early in April.
Mae gennym borth o 50% ar gyfer symud o un garfan i'r llall ac rydym yn disgwyl dechrau gwahodd y rhai dan 50 oed ar gyfer eu dosau cyntaf yn gynnar ym mis Ebrill.