IMF Managing Director Kristalina Georgieva speaks during a conference, March 4, 2020. (Photo: CFP)

The International Monetary Fund (IMF) warned of a slowing momentum in global economy recovery as infection rates are still high in many parts of the world.

"While global economic activity has picked up since June, there are signs that the recovery may be losing momentum, and the crisis is likely to leave deep, unequal scars," said the IMF in a report for the November 21-22 G20 Leaders' Summit.

High unemployment rate and social distancing measures will continue to hold back momentum in the service sector, and surge in debt will add to challenges down the road, according to the report.

The report said policies should be focused on ending the crisis quickly and supporting a strong recovery through multilateral collaboration on the development, production, and distribution of therapies and vaccines, as well as extensive monetary and financial policies.

IMF Managing Director Kristalina Georgieva said in a blog that the resurgence in infections in many economies shows just how difficult and uncertain this ascent will be, and called for continued strong policy action.

"The good news is the significant progress on vaccine development... The not-so-good news is the severity of the pandemic and its negative economic impact," said Georgieva.

She also said there is room for further fiscal support next year beyond what is currently budgeted. "For countries with limited fiscal space, it will be critical to prioritize and reallocate spending to protect the most vulnerable."

Also, public sector investment can help move economies toward full employment while strengthening private sector productivity. She said countries should prepare for a synchronized infrastructure investment push to invigorate growth.

The IMF forecast a 2020 global contraction of 4.4 percent last month, and said China is the only economy in the world expected to see positive growth this year.

The IMF chief said they expect a partial and uneven recovery next year, with growth at 5.2 percent.