We also believe there would be a sound basis from a virus transmission point of view given younger people often mix with others to a greater degree than some older groups of the population.
Credwn hefyd y byddai sail gadarn dros eu cynnwys o safbwynt trosglwyddo’r feirws o ystyried bod pobl iau yn aml yn cymysgu ag eraill i raddau mwy na rhai grwpiau hŷn o'r boblogaeth.