Mullingar's Kingston Mills says the rollout is ramping up.
Over 250,000 COVID-19 vaccine doses are expected to be administered this week.
Starting from today, over 50s who registered on the online portal will be given their first dose.
Over 1.8 million doses have been administered to date, which is expected to pass 2 million this week.
Professor of Immunology at Trinity College Dublin, Mullingar's Kingston Mills, says the rollout is ramping up: