> Completed the primary series of Pfizer or Moderna vaccine over 6 months ago and are not boosted
> OR Completed the primary series of J&J over 2 months ago and are not boosted
> OR Are unvaccinated
So vaccinations received greater than 2-6 months prior are worthless in this context (still keeps you out of the hospital, doesn't reduce transmissibility).
This signals that the provided "immunity" is quite short-lived, moreso than any other vaccine I can recall. How unfortunate.