Before revision:  Regions of the Russian Federation with relatively low detectability of SARS-CoV-2 infection (e.g. those regions for which case-fatality ratio is below the median value of 0.0118 for the case-fatality ratio in different regions of the Russian Federation on Sep. 6 , 2020 [3]) ought to increase testing for SARS-CoV-2 in order to mitigate the spread of SARS-CoV-2 and diminish the related mortality.
After revision:  Regions of the Russian Federation with relatively low detectability of SARS-CoV-2 infection (e.g. those regions for which case-fatality ratio is below the median value of 1.2\% for the case-fatality ratio in different regions of the Russian Federation on Sep. 6 , 2020 [3]) ought to increase testing for SARS-CoV-2 in order to mitigate the spread of SARS-CoV-2 and diminish the related mortality.