The European Medicines Agency (EMA) is reviewing possible links between Johnson & Johnson’s Covid-19 vaccine and blood clots.
EMA said there were reports of four serious cases of people who had developed blood clots after they got the vaccine. It is unclear if the clots are connected to the vaccine or related to some other medical issue.
One case involved a person in a clinical trial, and the three others happened during the US roll out of the vaccine. In one of the cases, the person died, the release said.
The J&J Covid-19 vaccine was authorized for use in the European Union on March 11, but the vaccines have not yet been rolled out there. The EU rollout is supposed to start in the next few weeks. Only the US is currently seeing a supply of J&J vaccines.
The Pandemic Response Accountability Committee is reviewing the blood clot cases and will announce what it has found once the investigation is complete.