The HSE says those who're eligible for a third Covid-19 vaccine will be contacted in due course.
It follows updated advice from the National Immunisation Advisory Committee that people with weak immune systems should get an extra mRNA dose.
NIAC also updated its advice on mixing and matching shots, which's being facilitated at walk-in clinics this weekend.
HSE lead on the vaccination programme, Damien McCallion, says they're currently working to identify people who qualify for a third dose.