The UK's vaccine advisory body says people under 30 years old are to be offered an alternative COVID-19 injection to the AstraZeneca vaccine due to mounting evidence linking it to rare blood clots.
A review by the Medicines and Healthcare products Regulatory Agency (MHRA) found by the end of March, 79 people in the UK suffered rare blood clots after vaccination.
Nineteen of them died.
The regulator said this was not proof the vaccine had caused the clots.
But it said the link was getting firmer.
Nearly two-thirds of the cases of rare clots were seen in women.
The people who died were aged between 18 and 79.