The National Public Health Emergency Team has asked the HSE to look at the possibility of running mass vaccination centres on a 24-hour basis.
However, the Executive says the vaccine programme is reliant on supply, and also people presenting for their jab - but will extend the roll-out as needed to keep up with supply.
Latest figures show 1.6 million vaccines have been administered in Ireland, including 1.1 million first doses
Professor Martin Cormican from the HSE says jabs are getting into arms as quickly as possible:
It comes as 38 people with Covid-19 were in ICU last night - the first time the figure has fallen below 40 in 2021.
Across public hospitals there were 132 patients with the virus.
The national 14-day incidence rate has fallen by 9 percent in the past week to 134 cases per 100,000 people.
It comes as the Department of Health is considering a revised vaccine roll-out plan for the summer which would scrap the age-based approach currently adopted.
Consultant pathologist at Dublin's Beaumont Hospital, Bill Tormey, believes now is the time to change the vaccination method:
