A UN report has revised up the world economic growth as a result of robust rebounds in China and the United Nations but warned against fragilities in other economies in the context of Covid-19.

Department of Economic and Social Affairs revised its forecast for China from 7.2 percent to 8.2 percent; and for the US from 3.4 percent to 6.2 percent for 2021.

In its mid-year update of its World Economic Situation and Prospects 2021, which was released in January 2021, the UN Department of Economic and Social Affairs now predicts the world economy will grow 5.4 percent in 2021 instead of the 4.7 percent forecast in January 2021.

Following a sharp contraction of 3.6 percent in 2020, the world economy will return to positive territory as the world's two largest economies like China and the US will register impressive growth, according to the mid-year update, which was released on Tuesday.

The pandemic is far from over for a majority of countries. Daily new infections were higher in April 2021 than the number of new infections reported daily during the peak of the pandemic in December 2020, the report noted.

The growth outlook in several countries in South Asia, sub-Saharan Africa, and Latin America and the Caribbean, remains fragile and uncertain. For many developing countries, economic output is only projected to return to pre-pandemic levels in 2022 or 2023, according to the report.

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