Isaac Sebenius and James K. Sebenius write:

More than 120,000 Americans have now perished from Covid-19, surpassing the total number of U.S. dead during World War I. Had American leaders taken the decisive, early measures that several other nations took when they had exactly the same information the U.S. did, at exactly the same time in their experience of the novel coronavirus, how many of these Covid-19 deaths could have been prevented?

That isn’t a hypothetical question. And the answer that emerges from a direct comparison of the fatalities in and policies of the U.S. and other countries — South Korea, Australia, Germany, and Singapore — indicates that between 70% and 99% of the Americans who died from this pandemic might have been saved by measures demonstrated by others to have been feasible.

At least three factors enable meaningful comparisons of these nations with the United States. First, we scaled up their population sizes and Covid-19 deaths to match those of the U.S. Second, in each of these countries, roughly 80% or more of the population lives in urbanized, transmission-prone areas, similar to the U.S. Third, the pandemic took root earlier in these other countries than here, as measured by the date of the 15th confirmed case in each, meaning that foreign leaders had to act with less information to guide their decisions than did U.S. leaders. [Continue reading…]