"What is true as of now is that we're starting out the year at a somewhat stronger point than we had expected in 2020, which is a good thing" Gita Gopinath told CNBC. "But right now, it's a race between the virus and the vaccines and until we get past this, I think this is a pretty difficult period at this time."

The IMF is expected to revise its Global Economic Outlook forecasts on Jan. 26. In October, it forecast a 4.4% global GDP contraction for 2020, followed by a rebound to growth of 5.2% for 2021.

(Reporting by David Lawder; Editing by Chizu Nomiyama)