The HSE has missed its target of administering 100,000 COVID-19 vaccines for last week.
Just over 81,000 doses were administered over the seven days up to Sunday.
HSE chief executive Paul Reid had pledged that 'well over' 100,000 vaccines would be administered last week.
The highest daily number was 18,300 on Thursday, while fewer than 2,500 were administered on Sunday.
In total, over 439,700 vaccinations have taken place, with 141,000 of those are second doses.
Nearly 52,000 people aged 70 and older have now been vaccinated.
In total, 15% of vaccines given out have been AstraZeneca, while nearly 83% are the Pfizer / BioNTech jab.
Supplies of the Moderna jab remain limited, accounting for just 2% of the jabs so far.
The Government has set a goal of having 82% of adults vaccinated by the end of June, with plans for one million doses administered on average per month between April and June.