Ok. If we take the observed data (0.15% mortality rate in the overall population) we can make hypothesis like “infection rate is 30%” and “infection fatality ra

Ok. If we take the observed data (0.15% mortality rate in the overall population) we can make hypothesis like “infection rate is 30%” and “infection fatality rate is 0.5%”. But being consistent and plausible doesn’t make them true. 15% and 1% are also plausible, as far as I know.