While many wealthy nations are poised for a major economic expansion this year, other nations' struggles could reverse decades of progress in fighting poverty
A health care worker administers a Moderna vaccine in the Bronx, April 5, 2021. The International Monetary Fund warned on Tuesday, April 6, that an uneven rollout of vaccines poses a threat to the recovery of the global economy, as the fortunes of rich and poor countries diverge.
Image: James Estrin/The New York Times
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