People in their 50s may get their boosters earlier than planned.
The cohort was due to start getting appointments from mid-December, but the HSE now says they may begin to be issued sooner.
Boosters will initially be administered by appointment only but its expected walk-in clinics will be rolled out at a later stage.
Infectious Disease Specialist at the Royal College of Surgeons Ireland, Professor Sam McConkey says the booster campaign is gaining momentum.
