25 to 29 year olds can register for a Pfizer or Moderna vaccine from today.
The HSE's portal is now open to the cohort, however people in this age group can still register with a pharmacy for a Janssen vaccine.
Registration can be done online or over the phone, with appointments to be arranged in the coming weeks.
Beaumont Hospital Consultant, Professor Bill Tormey, says getting younger people vaccinated quickly will be vital due to the Delta variant: