All AstraZeneca vaccination clinics due to take place today have been cancelled

The Acting Chief Medical Officer says limiting the use of the AstraZeneca vaccine to over 60s "will likely have an impact" on the country's vaccine programme.

However Dr. Ronan Glynn says its extent "remains to be seen".

The recommendation from the National Immunisation Advisory Committee follows concerns over potential links between the vaccine and very rare blood clots.

Dr. Ronan Glynn says it'll take a number of days to calculate the impact of the decision on the country's vaccine programme:

"The HSE will be looking at how to effectively reallocate vaccine. So it's not necessarily the case that this will have a material impact or delay on the rollout of the programme at a population level, but I think, in fairness, we need to give the HSE least a couple of days to model the impact of this."