How dangerous is the COVID-19 coronavirus?
[A slightly edited and restructured answer that I originally wrote on Quora in response to the question, but which was summarily deleted by them, without explanation. Also, while there is new data on infections and deaths, etc. - which I included as regards the US death toll from Covid-19 after 4 months - these have not really changed the argument.]
An additional Quora post on this issue is here, by the grace of God: