Well we can look at Italy for example. Also America has a lot of obese people, which are supposedly at a high risk, so it’s possible we see a higher fatality rate. I personally don’t think so just trying to answer your question
Meneghini and Gram Pedersen of University of Padova just extended the standard “SIR” epidemiology model with quarantine and it has the nice property of being able to estimate the infections from the observables.
Preprint on Researchgate: “ Quantifying undetected COVID-19 cases and effects of containment measures in Italy”
