The vax loses ability to prevent infection in 6 months and the ability to prevent deaths not long after that.
This study is similarly worthless in that the timeframes align with virus surge, which, of course, kills people.
Ed’s are the gold standard for identifying loss of life expectancy from the virus, because the peaks and troughs so closely align with Covid death peaks and troughs.
It isn’t a ‘vax’ if it loses efficacy THAT quickly, period. This all begs the question the question whether whatever-it-is had any ‘efficacy’ in the first place.