Статистика.

case fatality rate is the number of reported deaths per number of reported cases (Updated 30th April)

https://www.cebm.net/covid-19/global-covid-19-case-fatality-rates/

Mortality Rate - is a measure of the number of deaths (in general, or due to a specific cause) in a particular population, scaled to the size of that population, per unit of time.
Mortality rate is typically expressed in units of deaths per 1,000 individuals per year; thus, a mortality rate of 9.5 (out of 1,000) in a population of 1,000 would mean 9.5 deaths per year in that entire population, or 0.95% out of the total.

3.4% Mortality Rate estimate by the World Health Organization (WHO) as of March 3

Deaths involving coronavirus disease 2019 (COVID-19), pneumonia, and influenza reported to NCHS by jurisdiction of occurrence, United States. Week ending 2/1/2020 to 4/25/2020.*
https://www.cdc.gov/nchs/nvss/vsrr/covid19/index.htm