How much constantly-waning reduction of viral load and symptoms do you think would be necessary to coerce a healthy person not exhibiting any risk factors for severe covid-related illness into subjecting themselves to experimental vaccines with admitted 1 in 20k (or higher) risks for certain severe adverse effects up to an including death?

When vaccine efficacy goes negative (you're more vulnerable to infection and become as or more symptomatic and carry as high or higher a viral load than unvaccinated) after a few months, you have to get a booster and subject yourself to the same or greater low, but non-negligible risk of known serious/fatal adverse effects in order to fingers crossed buy a few more months of protection you don't personally need but which you hope will reduce truly high-risk persons' chances of contracting covid. There may also be other, as-yet-unknown adverse effects.

How long are you willing to keep running back and forth across a minefield?