Another potentially dangerous blood condition has been spotted in a handful of patients given the AstraZeneca coronavirus vaccine, the EU's drug watchdog has announced. The European Medicines Authority said five cases of capillary leak syndrome had been reported in vaccinated patients on the continent. The rare condition sees blood leak from tiny vessels into muscles and body cavities, resulting in a sudden drop in blood pressure. If left untreated, it can cause organ failure. Data suggests the UK's regulator, the MHRA, had spotted three cases of capillary leak syndrome out of 20million people given the AstraZeneca vaccine by late March.