British officials are urging people to continue taking the AstraZeneca COVID-19 vaccine, despite revealing that seven people in the U.K. have died from rare blood clots after getting the shot.
The Medicines and Healthcare Regulatory Agency, or MHRA, said it wasn’t clear if the shots are causing the clots, and that its “rigorous review into the U.K. reports of rare and specific types of blood clots is ongoing.”
Though the agency said late Friday that seven people had died as a result of developing blood clots, it didn’t disclose any information about their ages or health conditions.
In total, MHRA said it had identified 30 cases of rare blood clots out of 18.1 million AstraZeneca doses administered up to and including March 24.
The risk associated with this type of blood clot is “very small,” it added.