Germany, France, Italy and Spain have suspended the use of AstraZeneca’s COVID-19 vaccine after several reports of blood clots in people who received the shot in Europe.
The flurry of suspensions on Monday came after a number of other countries, mostly in Europe, halted their rollouts late last week.
The World Health Organization (WHO) has backed the use of the vaccine and said it has seen no evidence that the shot had caused clotting.
The UN health agency is reviewing the reports related to shot and urged countries not to suspend vaccinations, as its top scientist said people should not panic.
The European Medicines Agency (EMA) said in a statement that it has not found any evidence of links between reported thrombosis cases and the AstraZeneca shot, saying that the shot’s benefits outweigh the risks and was safe to use. The regulator is reviewing the shot and will issue a decision on any further action on Thursday, it said.