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Congratulations Kanika on her paper on kinetics of the neutralizing antibody response to SARS-CoV-2 infection

Kinetics and correlates of the neutralizing antibody response to SARS-CoV-2 infection in humans.

Vanshylla K, Di Cristanziano V, Kleipass F, Dewald F, Schommers P, Gieselmann L, Gruell H, Schlotz M, Ercanoglu MS, Stumpf R, Mayer P, Zehner M, Heger E, Johannis W, Horn C, Suárez I, Jung N, Salomon S, Eberhardt KA, Gathof B, Fätkenheuer G, Pfeifer N, Eggeling R, Augustin M, Lehmann C, Klein F.

Cell Host Microbe. 2021 Jun 9;29(6):917-929.e4. doi: 10.1016/j.chom.2021.04.015. Epub 2021 May 3.

Abstract
Understanding antibody-based SARS-CoV-2 immunity is critical for overcoming the COVID-19 pandemic and informing vaccination strategies. We evaluated SARS-CoV-2 antibody dynamics over 10 months in 963 individuals who predominantly experienced mild COVID-19. Investigating 2,146 samples, we initially detected SARS-CoV-2 antibodies in 94.4% of individuals, with 82% and 79% exhibiting serum and IgG neutralization, respectively. Approximately 3% of individuals demonstrated exceptional SARS-CoV-2 neutralization, with these “elite neutralizers” also possessing SARS-CoV-1 cross-neutralizing IgG. Multivariate statistical modeling revealed age, symptomatic infection, disease severity, and gender as key factors predicting SARS-CoV-2-neutralizing activity. A loss of reactivity to the virus spike protein was observed in 13% of individuals 10 months after infection. Neutralizing activity had half-lives of 14.7 weeks in serum versus 31.4 weeks in purified IgG, indicating a rather long-term IgG antibody response. Our results demonstrate a broad spectrum in the initial SARS-CoV-2-neutralizing antibody response, with sustained antibodies in most individuals for 10 months after mild COVID-19. Cell Host Microbe. 2021