The global death toll from COVID-19 topped 5 million on Monday, less than two years into a crisis that has not only devastated poor countries but also humbled wealthy ones with first-rate health care systems. Together, the United States, the European Union, Britain and Brazil — all upper-middle- or high-income countries — account for one-eighth of the world’s population but nearly half of all reported deaths. The U.S. alone has recorded over 740,000 lives lost, more than any other nation.

The global death toll from COVID-19 topped 5 million on Monday, less than two years into a crisis that has not only devastated poor countries but also humbled wealthy ones with first-rate health care systems. Together, the United States, the European Union, Britain and Brazil — all upper-middle- or high-income countries — account for one-eighth of the world’s population but nearly half of all reported deaths. The U.S. alone has recorded over 740,000 lives lost, more than any other nation.