Is there a link between pre-existing antibodies acquired due to childhood vaccinations or past infections and COVID-19? A case control study.
Bilge SumbulHilmi Erdem SumbulRamazan Azim OkyayErdinç GülümsekAhmet Rıza ŞahinBaris BoralBurhan Fatih KoçyiğitMostafa AlfishawyJeffrey E GoldAlİ Muhittin TasdoganPublished in: PeerJ (2021)
Our study supports the hypothesis that pre-existing immune memory, as monitored using circulating antibodies, acquired from childhood vaccinations, or past infections confer some protection against COVID-19. Randomized controlled studies are needed to support a definitive conclusion.