Correlates of protection against symptomatic and asymptomatic SARS-CoV-2 infection

© 2021. The Author(s)..

The global supply of COVID-19 vaccines remains limited. An understanding of the immune response that is predictive of protection could facilitate rapid licensure of new vaccines. Data from a randomized efficacy trial of the ChAdOx1 nCoV-19 (AZD1222) vaccine in the United Kingdom was analyzed to determine the antibody levels associated with protection against SARS-CoV-2. Binding and neutralizing antibodies at 28 days after the second dose were measured in infected and noninfected vaccine recipients. Higher levels of all immune markers were correlated with a reduced risk of symptomatic infection. A vaccine efficacy of 80% against symptomatic infection with majority Alpha (B.1.1.7) variant of SARS-CoV-2 was achieved with 264 (95% CI: 108, 806) binding antibody units (BAU)/ml: and 506 (95% CI: 135, not computed (beyond data range) (NC)) BAU/ml for anti-spike and anti-RBD antibodies, and 26 (95% CI: NC, NC) international unit (IU)/ml and 247 (95% CI: 101, NC) normalized neutralization titers (NF50) for pseudovirus and live-virus neutralization, respectively. Immune markers were not correlated with asymptomatic infections at the 5% significance level. These data can be used to bridge to new populations using validated assays, and allow extrapolation of efficacy estimates to new COVID-19 vaccines.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:27

Enthalten in:

Nature medicine - 27(2021), 11 vom: 27. Nov., Seite 2032-2040

Sprache:

Englisch

Beteiligte Personen:

Feng, Shuo [VerfasserIn]
Phillips, Daniel J [VerfasserIn]
White, Thomas [VerfasserIn]
Sayal, Homesh [VerfasserIn]
Aley, Parvinder K [VerfasserIn]
Bibi, Sagida [VerfasserIn]
Dold, Christina [VerfasserIn]
Fuskova, Michelle [VerfasserIn]
Gilbert, Sarah C [VerfasserIn]
Hirsch, Ian [VerfasserIn]
Humphries, Holly E [VerfasserIn]
Jepson, Brett [VerfasserIn]
Kelly, Elizabeth J [VerfasserIn]
Plested, Emma [VerfasserIn]
Shoemaker, Kathryn [VerfasserIn]
Thomas, Kelly M [VerfasserIn]
Vekemans, Johan [VerfasserIn]
Villafana, Tonya L [VerfasserIn]
Lambe, Teresa [VerfasserIn]
Pollard, Andrew J [VerfasserIn]
Voysey, Merryn [VerfasserIn]
Oxford COVID Vaccine Trial Group [VerfasserIn]
Adlou, Syed [Sonstige Person]
Allen, Lauren [Sonstige Person]
Angus, Brian [Sonstige Person]
Anslow, Rachel [Sonstige Person]
Asselin, Marie-Claude [Sonstige Person]
Baker, Natalie [Sonstige Person]
Baker, Philip [Sonstige Person]
Barlow, Thomas [Sonstige Person]
Beveridge, Amy [Sonstige Person]
Bewley, Kevin R [Sonstige Person]
Brown, Phillip [Sonstige Person]
Brunt, Emily [Sonstige Person]
Buttigieg, Karen R [Sonstige Person]
Camara, Susana [Sonstige Person]
Charlton, Sue [Sonstige Person]
Chiplin, Emily [Sonstige Person]
Cicconi, Paola [Sonstige Person]
Clutterbuck, Elizabeth A [Sonstige Person]
Collins, Andrea M [Sonstige Person]
Coombes, Naomi S [Sonstige Person]
Clemens, Sue Ann Costa [Sonstige Person]
Davison, Melanie [Sonstige Person]
Demissie, Tesfaye [Sonstige Person]
Dinesh, Tanya [Sonstige Person]
Douglas, Alexander D [Sonstige Person]
Duncan, Christopher J A [Sonstige Person]
Emary, Katherine R W [Sonstige Person]
Ewer, Katie J [Sonstige Person]
Felle, Sally [Sonstige Person]
Ferreira, Daniela M [Sonstige Person]
Finn, Adam [Sonstige Person]
Folegatti, Pedro M [Sonstige Person]
Fothergill, Ross [Sonstige Person]
Fraser, Sara [Sonstige Person]
Garlant, Harriet [Sonstige Person]
Gatcombe, Laura [Sonstige Person]
Godwin, Kerry J [Sonstige Person]
Goodman, Anna L [Sonstige Person]
Green, Christopher A [Sonstige Person]
Hallis, Bassam [Sonstige Person]
Hart, Thomas C [Sonstige Person]
Heath, Paul T [Sonstige Person]
Hill, Helen [Sonstige Person]
Hill, Adrian V S [Sonstige Person]
Jenkin, Daniel [Sonstige Person]
Kasanyinga, Mwila [Sonstige Person]
Kerridge, Simon [Sonstige Person]
Knight, Chanice [Sonstige Person]
Leung, Stephanie [Sonstige Person]
Libri, Vincenzo [Sonstige Person]
Lillie, Patrick J [Sonstige Person]
Marinou, Spyridoula [Sonstige Person]
McGlashan, Joanna [Sonstige Person]
McGregor, Alastair C [Sonstige Person]
McInroy, Lorna [Sonstige Person]
Minassian, Angela M [Sonstige Person]
Mujadidi, Yama F [Sonstige Person]
Penn, Elizabeth J [Sonstige Person]
Petropoulos, Christos J [Sonstige Person]
Pollock, Katrina M [Sonstige Person]
Proud, Pamela C [Sonstige Person]
Provstgaard-Morys, Samuel [Sonstige Person]
Rajapaska, Durga [Sonstige Person]
Ramasamy, Maheshi N [Sonstige Person]
Sanders, Katherine [Sonstige Person]
Shaik, Imam [Sonstige Person]
Singh, Nisha [Sonstige Person]
Smith, Andrew [Sonstige Person]
Snape, Matthew D [Sonstige Person]
Song, Rinn [Sonstige Person]
Shrestha, Sonu [Sonstige Person]
Sutherland, Rebecca K [Sonstige Person]
Thomson, Emma C [Sonstige Person]
Turner, David P J [Sonstige Person]
Webb-Bridges, Alice [Sonstige Person]
Wrin, Terri [Sonstige Person]
Williams, Christopher J [Sonstige Person]

Links:

Volltext

Themen:

Antibodies, Neutralizing
Antibodies, Viral
COVID-19 Vaccines
Journal Article
Research Support, Non-U.S. Gov't

Anmerkungen:

Date Completed 03.12.2021

Date Revised 21.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1038/s41591-021-01540-1

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM331301628