Correlation of Binding and Neutralizing Antibodies against SARS-CoV-2 Omicron Variant in Infection-Naive and Convalescent BNT162b2 Recipients

被引：11

作者：

Fu, Jia ^{[1
,2
]}

Shen, Xiaoying ^{[3
]}

Anderson, Mark ^{[4
]}

Stec, Michael ^{[4
]}

Petratos, Tia ^{[1
,2
]}

Cloherty, Gavin ^{[4
]}

Montefiori, David C. ^{[3
]}

Landay, Alan ^{[1
,2
]}

Moy, James N. ^{[1
,2
]}

机构：

[1] Rush Univ, Div Allergy & Immunol, Chicago, IL 60302 USA

[2] Rush Univ, Rush Univ Med Ctr, Dept Internal Med, Div Gerontol, Chicago, IL 60302 USA

[3] Duke Univ Med Ctr, Duke Human Vaccine Inst, Dept Surg, Durham, NC 27710 USA

[4] Abbott Labs, Abbott Diag Div, Abbott Pk, IL 60064 USA

来源：

VACCINES | 2022年 / 10卷 / 11期

基金：

美国国家卫生研究院;

关键词：

SARS-CoV-2; BNT162b2; Omicron; Delta; Beta; variants of concern; binding antibodies; neutralizing antibodies;

D O I：

10.3390/vaccines10111904

中图分类号：

R392 [医学免疫学]; Q939.91 [免疫学];

学科分类号：

100102 ;

摘要：

In vaccine clinical trials, both binding antibody (bAb) levels and neutralization antibody (nAb) titers have been shown to be correlates of SARS-CoV-2 vaccine efficacy. We report a strong correlation bAb and nAb responses against the SARS-CoV-2 Omicron (BA.1) variant in infection-naive and previously infected (convalescent) individuals after one and two doses of BNT162b2 vaccination. The vaccine-induced bAb levels against Omicron were significantly lower compared to previous variants of concern in both infection-naive and convalescent individuals, with the convalescent individuals showing significantly higher bAb compared to the naive individuals at all timepoints. The finding that bAb highly correlated with nAb provides evidence for utilizing binding antibody assays as a surrogate for neutralizing antibody assays. Our data also revealed that after full vaccination, a higher percentage of individuals had undetectable Omicron nAb (58.6% in naive individuals, 7.4% in convalescent individuals) compared to the percentage of individuals who had negative Omicron bAb (0% in naive individuals, 0% in convalescent individuals). The discordance between bAb and nAb activities and the high degree of immune escape by Omicron may explain the high frequency of Omicron infections after vaccination.

引用

页数：9

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