There's a ton of information to poke around at the link; but here's their [EDIT] median estimated IFR by age range: 15-24: 0.0032% 25-44: 0.018% 45-64: 0.28%

There's a ton of information to poke around at the link; but here's their [EDIT] median estimated IFR by age range: 15-24: 0.0032% 25-44: 0.018% 45-64: 0.28% 65-74: 1.8% 75+: 16% The last one looks similar to the measured death rates by age group in Germany -- i.e., the COVID-19 deaths of 80+ in Germany divided by people tested positive in Germany was around 18% when I looked before, IIRC. So nearly the entirety of the "1-3% fatality" comes from the fact that it's so incredibly deadly to the elderly.