Around one-quarter of five to 11-year-olds have been registered for COVID vaccination.
New HSE figures show that 24% of the 482,000 children in the age cohort have been registered.
It means 366,000 have not been registered since the portal opened just over three weeks ago.
Meanwhile, three-quarters of the 12 to 15-year-old cohort has been registered – leaving 69,000 who opted against vaccination.
Take-up is much higher among 16 and 17-year-olds, at 92%.
It means only 10,000 people in the cohort didn’t sign up.
On The Pat Kenny Show yesterday, GP Brendan O’Shea encouraged parents to sign up their children for vaccination by saying the benefits are “definite but small”.
He suggested the move would also bring significant benefits to the wider community.