British researchers have halted trials of the AstraZeneca COVID-19 vaccine on children — as European health officials on Wednesday expressed growing confidence that it is tied to blood clots.
“Whilst there are no safety concerns in the pediatric clinical trial, we await additional information” from regulators, an Oxford spokesperson said.
Hours later, Britain’s medicines regulator said a review of adults who have already had at least one AstraZeneca dose in the UK now showed there had been at least 79 blood clots, with 19 deaths.
Officials announced that those under 29 with no underlying health condition “should be offered an alternative COVID-19 vaccine in preference to the AstraZeneca vaccine” when available.
The advice was “out of the utmost caution, rather than because we have any serious safety concerns,” insisted Wei Shen Lim of