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. 2022 Sep 8;13:964525. doi: 10.3389/fimmu.2022.964525

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Copyright © 2022 Søraas, Grødeland, Granerud, Ueland, Lind, Fevang, Murphy, Huse, Nygaard, Steffensen, al-Baldawi, Holberg-Petersen, Andresen, Ågnes, Ranheim, Schanke, Istre, Dahl, Chopra, Dudman, Kaarbø, Andersen, Vaage, Tran, Vaage, Michelsen, Müller, Aukrust, Halvorsen, Dahl, Holter and Lund-Johansen

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Early immune responses in individuals infected with Omicron or Delta. (A) Results from whole blood IFNγ release assay (IGRA, IU/ml) in samples harvested from the same individuals with an interval of 8-10 days. T1: inclusion, T2: one week follow up. (B–D) The bar graphs show relative levels (log 10) of antibodies to RBD and the nucleocapsid protein in samples described under (A, B) Individuals with confirmed Omicron infection, (C): Delta infection, (D): vaccinated individuals with no history of SARS-CoV-2 infection. ***p<10^-5, **p<10^-3, *p<10^-2. Source data are found in Supplemental Table 1 .