Before revision:  The aim of this paper is to examine the relation between detectability of SARS-CoV-2 infection (i.e. the percent of detected cases among all cases of SARS-CoV-2 infection in the population) and levels of mortality from COVID-19 for the different regions of the Russian Federation.
After revision:  The aim of this paper is to examine the relation between detectability of SARS-CoV-2 infection (i.e. the proportion of detected COVID-19 cases among all cases of SARS-CoV-2 infection in the population) and levels of mortality from COVID-19 for the different regions of the Russian Federation.