[Marsymars]

That doesn't seem at odds with a single order-of-magnitude difference though. Covid IFR in the 0.5% range is also based on more or less optimally treated patients given a developed country's population demographics. There isn't really room for a fatality rate to be "hundreds or thousands of times higher", you run into the 100% fatal bound pretty quickly.

[AndrewBissell]

The Covid IFR is not in the 0.5% range, and a few exceptions notwithstanding, the fatality rate tends to be lower in developing countries than the developed world.

[Marsymars]

US covid deaths are 0.51% of the CDC’s estimated total number of covid cases. The highest (NPR) estimate of US covid deaths is 0.79% of the CDC’s estimated total number of covid cases (which is, itself, not the highest total case estimate). Many studies have estimates in the similar range.

I know the IFR is lower in developing countries, I never meant to imply otherwise.