The COVID-19 vaccine made by AstraZeneca and the University of Oxford is safe and not linked to an increased risk of blood clots, according to an investigation by the European Union’s European Medicines Agency (EMA).

“This is a safe and effective vaccine. Its benefits in protecting people from COVID-19 with the associated risks of death and hospitalization outweigh the possible risks,” Emer Cooke, the EMA’s executive director, said at a news conference Thursday (March 18).