As I said many times on this board before: There are many many asymptotic carriers of his CoronaVirus- which means that they could unknowingly infect many others, without showing symptoms themselves.
That’s why we can’t all rush back to work, or to school, or anywhere else - it will start up the whole cycle again, with many more starting to die again!
I did read somewhere that if you have ever had a TB shot earlier in your life - you may have better chances of this virus not affecting you ...
Again, till we have a vaccination against this CoronaVirus, we all need to be tested. End of story.