Byddant yn gwneud penderfyniad ynglŷn â chynnig pigiad atgyfnerthu COVID-19 i bobl 18-39 oed yn nes ymlaen, pan ddaw rhagor o dystiolaeth i law i ddangos a yw effaith y brechlynnau’n gwanhau yn y grŵp hwn. Oherwydd y bydd y rhan fwyaf o oedolion ifanc wedi cael ail ddos y brechlyn COVID-19 ar ddiwedd ar haf neu ar ddechrau’r hydref, bydd ganddynt lefel uchel o amddiffyniad o hyd.
They will make a further decision on whether to offer a COVID-19 booster dose to those aged 18-39 at a later date, pending further evidence on vaccine waning in this group. As most younger adults will have received their second dose in late summer or early autumn, they will still have a high level of protection.