People will have "greater clarity" on vaccine rollout timelines once a revised plan is finished this week, the HSE boss has said.
It comes as people aged 59 will be able to register for a jab from tomorrow.
Registration will then open for other people in the 50-59 age group over subsequent days, as the vaccine programme continues to gather pace.
HSE Chief Executive Paul Reid says there's now "strong momentum" behind the vaccination campaign.
Great momentum on vaccinations. Almost 200K done last week (>200K when some data is uploaded). >44K done on Friday. >1.6M done in total. Over 788,000 done through April. Our revised plan will aim to continue momentum & work down through the ages with available supplies @HSELive
— Paul Reid (@paulreiddublin) May 3, 2021
He said: “We’re in a phase of really strong momentum at the moment. We’re coming off a strong week last week, with over 200,000 vaccines administered.
“It was a very strong April with over 780,000 vaccines administered.”
The HSE is continuing to finalise its revised vaccine rollout plan, in the wake of recent advice from NIAC about the use of Johnson & Johnson and AstraZeneca vaccines.
Over the weekend, Fine Gael suggested the vaccination of people aged 35-49 will likely get underway in June.
A similar social media post from the Department of Health has since been deleted.
Mr Reid said details around a timeline are still being finalised.
He said: “In reality, we need to finalise this plan this week… that will then set out with greater clarity how we progress through each of the age groups.
“This week we’ll open the online portal registration system for those aged 59 from tomorrow, and then we’ll continue down through the ages.”