Two significant changes could be on the way to the vaccine rollout programme.
The HSE is considering reducing the weeks between doses of the AstraZeneca jab from 12 to 8.
While a large number of people under the age of 50 may only need one dose of a jab.
It's after research shows people who've had the virus are now immune to re-infection for nine months as opposed to six.
Dr Máirín Ryan from the Health Information and Quality Authority says our vaccine supplies should stretch out as a result.