Yesterday was another record day for the vaccine and booster programme, with 108,000 in total administered.
That includes 103,000 Covid-19 booster jabs.
HSE Chief Executive Paul Reid says 186,000 vaccines have been given out in two days.
Another record day in the vaccination & booster programme yesterday. 108,000 vaccines in total administered in one day (103,000 boosters). Thats 186,000 vaccines administered in just 2 days. 1.77M boosters & 3rd doses done. Thanks to all who are vaccinating & the public @HSELive
— Paul Reid (@paulreiddublin) December 22, 2021
It comes as figures show one in every six young adults still aren't fully vaccinated.
NPHET says they either haven't come forward, or have only got one dose.
Meanwhile the chief medical officer is urging people to only meet those they intend spending Christmas Day with this week.
Dr Tony Holohan says the highly transmissible Omicron variant now accounts for two thirds of new Covid cases.
The five-day moving average has grown to 5,233, a 22 per cent increase on a week ago.
Infectious diseases consultant at St James's Hospital in Dublin, Cliona Ní Cheallaigh, says more restrictions may be needed;
"What's more important is how many of the cases become seriously unwell and require hospital care or have their lives threatened by Covid. So I think that will determine what level of restrictions to come in in the following weeks and we just don't know that yet."
Cases
396 Covid patients were in public hospitals last night, after a drop of 23 in the space of 24 hours. It's also down 61 on a week ago.
The Mater and Tallaght hospitals in Dublin have the most Covid patients, with 35 each.
102 people are in intensive care with the virus throughout the country.