• Tyler J Ripperger, Jennifer L Uhrlaub, Makiko Watanabe, Rachel Wong, Yvonne Castaneda, Hannah A Pizzato, Mallory R Thompson, Christine Bradshaw, Craig C Weinkauf, Christian Bime, Heidi L Erickson, Kenneth Knox, Billie Bixby, Sairam Parthasarathy, Sachin Chaudhary, Bhupinder Natt, Elaine Cristan, Tammer El Aini, Franz Rischard, Janet Campion, Madhav Chopra, Michael Insel, Afshin Sam, James L Knepler, Andrew P Capaldi, Catherine M Spier, Michael D Dake, Taylor Edwards, Matthew E Kaplan, Serena Jain Scott, Cameron Hypes, Jarrod Mosier, David T Harris, Bonnie J LaFleur, Ryan Sprissler, Janko Nikolich-Žugich, and Deepta Bhattacharya.
• Department of Immunobiology, University of Arizona College of Medicine, Tucson, Tucson, AZ, USA.
• Immunity. 2020 Nov 17; 53 (5): 925-933.e4.

AbstractWe conducted a serological study to define correlates of immunity against SARS-CoV-2. Compared to those with mild coronavirus disease 2019 (COVID-19) cases, individuals with severe disease exhibited elevated virus-neutralizing titers and antibodies against the nucleocapsid (N) and the receptor binding domain (RBD) of the spike protein. Age and sex played lesser roles. All cases, including asymptomatic individuals, seroconverted by 2 weeks after PCR confirmation. Spike RBD and S2 and neutralizing antibodies remained detectable through 5-7 months after onset, whereas α-N titers diminished. Testing 5,882 members of the local community revealed only 1 sample with seroreactivity to both RBD and S2 that lacked neutralizing antibodies. This fidelity could not be achieved with either RBD or S2 alone. Thus, inclusion of multiple independent assays improved the accuracy of antibody tests in low-seroprevalence communities and revealed differences in antibody kinetics depending on the antigen. We conclude that neutralizing antibodies are stably produced for at least 5-7 months after SARS-CoV-2 infection.Copyright © 2020 Elsevier Inc. All rights reserved.

57 keywords...

hide…