Lots of people with C19 suffer from pneumonia which is not a totally regular problem with influenza A&B that we all already have a degree of genetic immunity to.
The R0 and CFR of this can change depending on our response. For it to go away we need an R0 below 1
The opinion of several respected virologists is that around 60% of the world will get it. which we need to in order to develop natural immunity.
The Lancet reports of all cases;
80% will have the sniffles, no medical intervention
15% Serious illness, medical care, medication
5% Critical - mechanical ventilation.
Don't forget both influenza's, HIV, Cancer, oh and car crashes ain't on hold while we deal with this.
OM