Good news: it may actually last several years not months: "A series of new studies, including two led by Ellebedy, suggests that mRNA vaccines like those from Pfizer-BioNTech and Moderna trigger the immune system to establish long-term protection against severe COVID-19 — protection that likely will last several years or even longer, Ellebedy says." https://www.npr.org/sections/goatsandsoda/2021/08/30/1032520...