> If true, it would go against all priors for how humans build immunity to viruses - especially coronavirus (common cold). Another possible implication is that

> If true, it would go against all priors for how humans build immunity to viruses - especially coronavirus (common cold). Another possible implication is that there could be multiple strains in circulation, not that the first strain wasn’t immunized against. You are totally right that we need more evidence and this is very unlikely to be happening. But, I am trying to convince OP to continue to be cautious even if they appear to have recovered, both for themselves and for others. It seems reasonable to be cautious. People have presented apparent recovery only to go on to appear infected again.