Yinon M. Bar-On, Goldberg, Yair , Mandel, Micha , Bodenheimer, Omri , Freedman, Laurence , Alroy-Preis, Sharon , Ash, Nachman , Huppert, Amit , and Milo, Ron . 2021. “Protection Against Covid-19 By Bnt162B2 Booster Across Age Groups”. New England Journal Of Medicine, 385, Pp. 2421-2430.