[_-___________-_]

The public health interventions the paper covers do not appear to rise to the level of what is currently being done in many countries. There are entire sectors of the economy that are effectively producing zero output (hospitality, tourism, transportation) in most countries. Furthermore, the economy is very different today than it was in 1918.

[xenocratus]

You forgot the part about some (less fortunate) economies depending heavily on exporting consumer (discretionary) goods to developed countries, which means that the dip in spending in US/Europe/China will lead to a big downturn in these countries.