More than 77,000 people have been vaccinated against COVID-19 as of Wednesday.
Some 4,000 people have been trained to issue vaccines in anticipation of a further roll-out of the vaccination programme.
The chief executive of the Health Service Executive (HSE), Paul Reid, outlined the breakdown of who has been vaccination so far.
"Cumulative as of today, there's now 77,300 vaccinations completed", he said.
He explained this breaks down as 69,378 frontline healthcare workers vaccinated, and 7,925 in long-term care facilities.
This includes residents and staff.
It comes as Health Minister Stephen Donnelly said Ireland is on track to vaccinate more than four million people by the end of September.
In a letter to TDs on Wednesday, he said 700,000 people should be vaccinated before April.
He said a further 7.5 million doses should the arrive in Ireland between April and October.
This would allow for the vaccination of 4.2 million people by October.
"We expect to receive approximately 3.7 million does from April to the end of June and 3.8 million between July and the end of September,” Minister Donnelly wrote.
"It is important to stress that our projections and timelines are constantly evolving as more vaccines are approved and delivery schedules finalised."
Minister Donnelly said the second phase of the roll-out would make use of GPs, pharmacists and mass vaccination centres and noted that the rollout will be "limited only by supply."
It comes amid calls for Ireland to purchase vaccines direct from manufacturers to add to the ‘trickle’ arriving as part of the EU agreement.
Reporting by: Kacey O'Riordan
