Dr. Ronan Glynn, Ireland’s deputy chief medical officer, said the recommendation was made after Norway’s medicines agency reported four cases of blood clotting in adults after receiving the AstraZeneca vaccine.

He said that while there was no conclusive link between the vaccine and the cases, Irish health officials are recommending the suspension of the vaccine’s rollout as a precaution. Danish, Norwegian and Icelandic authorities have taken similar precautionary steps.

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The Netherlands followed suit late Sunday, suspending vaccinations with the AstraZeneca shot as a precaution for two weeks. The health ministry said the move followed six new reports in Denmark and Norway of blood clotting and lowered levels of blood platelets in people aged under 50.

The Dutch medicines authority also stressed that no link has been proven between the cases and the vaccine.

The health ministry said that no cases had been reported in the Netherlands.

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AstraZeneca said in a statement Sunday that it “would like to offer its reassurance on the safety of its COVID-19 vaccine based on clear scientific evidence.”

Also read: No reason to stop using AstraZeneca jab, says WHO

“The safety of the public will always come first,” the British-Swedish biopharmaceutical company said, adding that it’s “keeping this issue under close review but available evidence does not confirm that the vaccine is the cause.”

The company said that a review of safety data of more than 17 million people who have received the AstraZeneca vaccine in the European Union and the U.K. “has shown no evidence of an increased risk of pulmonary embolism, deep vein thrombosis (DVT) or thrombocytopenia, in any defined age group, gender, batch or in any particular country.”

The World Health Organization and the European Union’s medicines regulator have previously said that there was no link between the jab and an increased risk of developing a clot.