This means we need to achieve exceptionally high levels of immunity in order to continue to reduce restrictions on people’s lives and try to prevent or minimise further waves of the disease.
Mae hyn yn golygu bod angen i ni sicrhau lefelau eithriadol o uchel o imiwnedd er mwyn parhau i leihau'r cyfyngiadau ar fywydau pobl a cheisio atal neu leihau tonnau pellach o'r clefyd.