Now that this is (almost) over

[Decoy of Fenris]

9. Not to my knowledge. Rate of mutation and lack of testing has made forecasts sketchy.

The asymptomatic issue is the largest one, followed -very- closely by no evidence existing of antibodies being effective protection. The potential of an 80% asymptomatic infection rate alone would be devastating, the virus circulating and mingling without warning or reason to suspect anything's wrong. The infected can be reinfected, the asymptomatic can become symptomatic, and no vaccine would work as we currently consider vaccines. This is very much a "Way of life" virus, I think; uncontainable, vaccine-proof, highly mutagenic, bypassing 'Herd Immunity' by virtue of carriers and reinfection...

Personal opinion only, we're in for an absolute hell of a ride, and the most vulnerable/disadvantaged are going to be hit like a sledgehammer, and there's nothing we can do to stop it.