I'm vaccinated myself, but why should past illness not be grounds for exception? Natural immunity works about as well as a vaccine, and fades much more slowly o

I'm vaccinated myself, but why should past illness not be grounds for exception? Natural immunity works about as well as a vaccine, and fades much more slowly over time. Obviously it would be even better if he had both, but he poses no more risk than a vaccinated person. (This of course avoids the question of whether he really had the illness, but for the sake of the argument let's assume he did.)