A total of 316 cases of rare blood clots with low platelets have been recorded in adults who received AstraZeneca's Covid-19 vaccine in the European Economic Area, an executive of the region's drug regulator said.

The figure as of Thursday includes 174 new reports since the European Medicines Agency (EMA) provided an update in April, Georgy Genov, the chief of the watchdog's safety monitoring operations, said during a briefing on Friday.

The EMA has been looking into cases of thrombosis with thrombocytopenia syndrome (TTS) since March and has found a possible link to...