Before revision:  Methods: Lower case-fatality ratio ( i.e. the ratio between the number of deaths from COVID-19 and the number of diagnosed casesof SARS-COV-2 infection ) corresponds to higher detectability of the SARS-COV-2 infection.
After revision:  Methods: Lower case-fatality ratio ( CFR, the proportion of deaths among all detected COVID-19 and the number of diagnosed casesof SARS-COV-2 infection ) corresponds to higher detectability of the SARS-COV-2 infection.