The UK says its vaccine rollout remains on course despite a change in guidance for young people about the AstraZeneca covid-19 jab.
Regulators say people aged under 30 will be offered an alternative vaccine if one is available.
It's due to evidence linking rare clots to the AstraZeneca jab.
Ministers say the UK has enough supplies of Pfizer and Moderna to make sure all adults are offered a vaccine dose by the end of July.
Health Secretary Matt Hancock says the rollout will continue at pace.
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