This means that those aged 5 to 49, who have not had their primary course or their 2021 booster dose, have until those dates to take up these offers.
Mae hyn yn golygu bod gan y rhai rhwng 5 a 49 oed sydd heb gael eu cwrs sylfaenol neu eu dos atgyfnerthu yn 2021 tan y dyddiadau hynny i fanteisio ar y cynigion hyn.