Over 50s, and those with underlying conditions aged between 16 and 59, will be added to the list of those eligible for a Covid-19 booster vaccine.
It follows advice from the National Immunisation Advisory Committee to Government – which has been approved by Ministers and the Chief Medical Officer.
Residents of long-term care facilities are being included in the roll-out regardless of age.
Everyone eligible to receive a booster will be given a dose of a mRNA jab.