Two of the four HSE walk-in Covid-19 vaccination clinics are open in the Northern Sound Region today.
Three centres, in Cavan, Monaghan and Meath, will be administering first and second doses of the Pfizer vaccine.
While second doses of the AstraZeneca vaccine will be available at the Aviva Stadium in Dublin.
It comes amid a continued rise in infections among young people, with health officials describing it as disease of "young, unvaccinated adults".
Dr Madeleine Ni Dhalaigh is from the Irish Medical Organisation, and a GP in Castlerea, Co Roscommon - she says hesitency is an issue: