thelancet.com Safety of the fourth COVID-19 BNT162b2 mRNA (second booster) vaccine: a prospective and retrospective cohort study November 18, 2022 https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(22)00407-6/fulltext 0970ウィズコロナの名無しさん2023/01/28(土) 05:54:15.32ID:HMfl6Sjt0 あれから3年、ワクチン(遅効性の毒)が効きはじめてるな 免疫落ちて病気にかかりやすくなる特性が出てる