The Netherlands has become the latest country to suspend use of the Oxford-AstraZeneca coronavirus vaccine over concerns about possible side effects.
The World Health Organization and the European Medicines Agency say there is no indication of a link between the vaccine and reports of blood clots. Seven countries have so far fully suspended the AstraZeneca vaccinations.
Experts say cases of clotting in vaccinated people are lower than the number seen in the general population.
About 17 million people in the EU and the UK have received a dose of the vaccine, with fewer than 40 cases of blood clots reported as of last week, AstraZeneca said.
The Dutch government said its suspension, which will last until at least 29 March, was a precaution.
Thailand announced that it would start using the vaccine on Tuesday, following a brief delay to the rollout over safety concerns.
The UK medicines regulator also said evidence “does not suggest” the jab causes clots, as it urged people in the country to get the vaccine when asked to do so.
Professor Andrew Pollard, director of the Oxford vaccine group which developed the Oxford-AstraZeneca jab, told the BBC’s Today programme there was “very reassuring evidence that there is no increase in a blood clot phenomenon here in the UK, where most of the doses in Europe [have] been given so far”.
Finland has also done a “very careful study” and not found an increased risk, he added.