Oxford University has today paused trials of its coronavirus vaccine in children while regulators probe the jab's link to rare blood clots.
A spokesperson for the prestigious university said the move was precautionary and that there were no health issues among any of the youngsters involved in the trial.
Oxford began studying the vaccine in five-to-17-year-olds in February, with the aim of eventually scaling up the trial and testing it in 200 people.
But scientists have stopped recruiting new volunteers and it is not clear how many children have already been given a dose.
Oxford is waiting for more information from the UK's regulator, the Medicines and Healthcare products Regulatory Agency, before restarting the study, the Wall Street Journal reported.