Yes, the denominator is way off for US cases...not so much for South Korean cases ...much more testing done there...use those numbers and you get 0.9%. Main point here is that the original post indicated “hard numbers, no estimates”, and then proceeded to use a fatality estimate. Only hard #’s available for common flu is pediatric fatalities.
https://www.cdc.gov/flu/about/burden/index.html
Some scientific estimates:
https://medium.com/@tomaspueyo/coronavirus-act-today-or-people-will-die-f4d3d9cd99ca
Yes, the denominator is way off for US cases...not so much for South Korean cases ...much more testing done there...use those numbers and you get 0.9%.
The 0.9% (really 1.0%) is a fatality/case rate, which is similar to saying that in South Korea has a recovery rate of only 17% (83% have died or not recovered). Both are wrong in the same way because they assume a final disposition which is actually unknown for the vast majority of cases.