Doctors and virologists very early on on "Doctor Radio" (SiriusXM) said this could well be the case because coronaviruses are like this (like colds). Then they stopped talking about it when all the vaccines went into development.

Anecdotal stories piled up, but I was hoping people were shedding dead virus particles.

Well, now that multiple infections are being confirmed scientifically, i guess we have to face this new unwelcome complication. I wonder what this means in terms of the frequency of vaccinations. Four shots a year (two and two spaced six months apart? Will that be enough? Do we need six shots a year? Two, two and two spaced four months apart? This will be fun.)