The World Health Organization said Friday it is reviewing recent reports of blood clots in some people who received the AstraZeneca Covid-19 vaccine that has prompted a few countries to halt their rollout of the shots.
At least nine countries, including Denmark, Norway, Iceland and Thailand, have suspended their use of the vaccine over safety concerns. As of Wednesday, around 5 million people in Europe had received the Oxford-AstraZeneca vaccine. Of this figure, 30 so-called thromboembolic events have been reported in recipients. Those are blood clots that form in blood vessels and block blood flow.
