Vaccination with BNT162b2 and ChAdOx1 nCoV-19 Induces Cross-Reactive Anti-RBD IgG against SARS-CoV-2 Variants including Omicron. - Gerges D; Kapps S; Hernández-Carralero E; Freire R; Aiad M; Schmidt S; Winnicki W; Reiter T; Pajenda S; Schmidt A; Sunder-Plassmann G; Wagner L (Viruses, 2022)