The HSE's online portal for Covid-19 vaccines opens for the 30 to 34 age group today.
34-year-olds can sign up for an mRNA jab this morning, with 33-year-olds tomorrow, down to 30-year-olds on Sunday.
Under-35s can also opt to get a Johnson and Johnson vaccine in a pharmacy, with 80,000 jabs being distributed to outlets from today.
4.5 million vaccines will have been administered in Ireland by the end of today.
HSE CEO Paul Reid says more than 100,000 doses have so far been given out this week.
Registration for a COVID-19 vaccine is now open for everyone ag 34 - 69.
In addition pharmacies can offer a Janssen vaccine by appointment to those age 18-34 pic.twitter.com/YRks4iOHEB
— Stephen Donnelly (@DonnellyStephen) July 7, 2021
Main Image: A medical worker administers a shot of Russia's Sputnik V coronavirus vaccine at a vaccination center in the GUM, State Department store, in Red Square in Moscow, Russia. Photo credit: AP Photo/Pavel Golovkin