UK's Hancock: AstraZeneca shot still safe

"We're totally transparent about (the) side effects and publish all the data that we have on them... And the regulators, not just the British regulator, but the European regulator and the World Health Organisation, are clear that the benefits of vaccination far outweigh the risks," he told the BBC on Thursday (April 8).

Britain's vaccine advisory committee said on Wednesday (April 7) that an alternative to Oxford-AstraZeneca's vaccine should be given to under 30s where possible due to a "vanishingly" rare side effect of blood clots in the brain.

Hancock said new guidance would not delay Britain's vaccination program because alternatives from Pfizer and Moderna would be available for the affected group.