"Shared prosperity" has become a common phrase in the development policy discourse. This short paper provides its most widely used operational definition-the growth rate in the average income of the poorest 40 percent of a country's population-and describes its origins. The paper discusses how...

This paper evaluates the global welfare consequences of increases in mortality and poverty generated by the Covid-19 pandemic. Increases in mortality are measured in terms of the number of years of life lost (LY) to the pandemic. Additional years spent in poverty (PY) are conservatively...