As the chart below illustrates, we have seen massive changes in the global mortality distribution since the beginning of 2021. On January 8, the share of high-income countries (the non-developing world) reached a maximum of 60%. Between January 8 and July 20, it plunged to 6% – a tenth of its value earlier this year!
This was mirrored in a shift of mortality to the developing world. Upper-middle-income countries (UMICs) saw the share rise considerably (from 29% to 56%), but the greatest increase was for the lower-middle-income countries (LMICs): from 7% to 36%. This was driven by India. For low-income countries (LICs), the share in reported mortality went up appreciably from close to 0% to 2% but remained low overall.
Since July 20, however, mortality dynamics started to shift again. The spread of delta meant that the high-income share went up again considerably. For the most recent developments, see the chart below.