LONDON—Britain’s medicines regulator said there had been five cases of a rare type of blood clot in the brain among 11 million given AstraZeneca’s COVID-19 vaccine but said that it found the benefits of the shot far outweigh any possible risks.
Concerns about reports of blood clots, along with low platelet levels, have led to some European countries including Germany to pause the rollout of the shot while the cases are investigated.