BRUSSELS, Jan 25 (Reuters) - The European Union health commissioner said that AstraZeneca had provided insufficient clarification at a meeting on Monday to its decision to slow down supplies of COVID-19 vaccines to the EU.

Stella Kyriakides said that another meeting with the company would be held later on Monday. She also said in a video statement that in future manufacturers of COVID-19 vaccines will have to register their planned exports outside the bloc. (Reporting by Francesco Guarascio @fraguarascio; Editing by Susan Fenton)