Fel strategaeth ragofalus, mae'r Cyd-bwyllgor wedi argymell ail ddos atgyfnerthu yn y gwanwyn ar gyfer:oedolion 75 oed a throsoddpreswylwyr cartrefi gofal i oedolion hŷnunigolion imiwnoataliedig 12 oed a throsodd (fel y'u diffinnir yn yLlyfr Gwyrdd)
The Committee has recommended, as a precautionary strategy, a second booster dose in the spring for:adults aged 75 years and over;residents in a care home for older adults, andindividuals aged 12 years and over who are immunosuppressed (as defined in in theGreen Book)