318,000 doses of Pfizer vaccines will arrive here today - in the biggest delivery so far.
Over 4 million Covid-19 jabs have been administered so far, with two thirds of people getting at least one dose.
The programme is set to ramp up - as the AstraZeneca and Johnson and Johnson vaccines are to be approved for all adults.
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They're currently only used on over-50s.
Dr Anne Moore, a vaccines expert in UCC, is encouraging younger people not to turn them down when they're offered.