Euro zone inflation fell to 0.7 percent in January, far below the ECB's target of just below 2 percent, fuelling concern that the bloc may slip into deflation.

The interest rate outlook "is based on an overall subdued outlook for inflation extending into the medium term," Draghi said at a news conference that followed the ECB's monthly policy meeting.

(Reporting by Eva Taylor: writing by John Stonestreet; Editing by Jeremy Gaunt/Ruth Pitchford)