With updated numbers (note the slight drop in mortality rate):
According to NY Times, for every confirmed coronavirus case, there are five to ten undetected cases out there.
https://www.nytimes.com/2020/03/16/h...ndetected.html
The latest US mortality rate derived from worldometer website is
1.2%.
https://www.worldometers.info/coronavirus/country/us/
If you account for undetected cases, the coronavirus mortality rate drops by a factor of five or ten - giving us actual mortality rate of
0.12% to 0.24%.
Seasonal flu mortality rate was given as
0.1% earlier in this thread.
R0 or basic reproduction number (also called basic reproduction ratio) measures the "contagiousness" of a disease. Per Wikipedia:
Covid-19 has estimated R0 of
1.4 to 3.9.
Seasonal flu has estimated R0 of
0.9 to 2.1.
CDC estimates that so far this season there have been at least 38 million flu illnesses, 390,000 hospitalizations and
23,000 deaths from flu.
https://www.cdc.gov/flu/weekly/index.htm
According to worldometer website, US has had
588 deaths from coronavirus so far.
https://www.worldometers.info/coronavirus/country/us/