Evidence map›Paper›PMID 35784321›Full record

ArticleFrontiers in immunology2022

IgG Anti-Spike Antibodies and Surrogate Neutralizing Antibody Levels Decline Faster 3 to 10 Months After BNT162b2 Vaccination Than After SARS-CoV-2 Infection in Healthcare Workers.

Bram Decru, Jan Van Elslande, Sophie Steels, Gijs Van Pottelbergh, Lode Godderis, Bram Van Holm, Xavier Bossuyt, Johan Van Weyenbergh, Piet Maes, Pieter Vermeersch

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Frontiers in immunology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
3.6field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 36 citations in OpenAlex.

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  5. Anti-SARS-CoV-2 Antibody Levels in a Cohort of Health Care Workers Before and After the Omicron Wave in Canada.Journal of the Association of Medical Microbiology and Infectious Disease Canada = Journal officiel de l'Association pour la microbiologie medicale et l'infectiologie Canada · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 1 institution in 1 country.

Bram DecruUniversity Hospitals Leuven, Clinical Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens, Leuven, Belgium.
Jan Van ElslandeUniversity Hospitals Leuven, Clinical Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens, Leuven, Belgium.
Sophie SteelsUniversity Hospitals Leuven, Clinical Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens, Leuven, Belgium.
Gijs Van PottelberghAcademic Centre of General Practice, KU Leuven, Leuven, Belgium.
Lode GodderisAcademic Centre of General Practice, KU Leuven, Leuven, Belgium.
Bram Van HolmLaboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium.
Xavier BossuytUniversity Hospitals Leuven, Clinical Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens, Leuven, Belgium.
Johan Van WeyenberghLaboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium.
Piet MaesLaboratory of Clinical and Epidemiological Virology, Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, Leuven, Belgium.
Pieter VermeerschUniversity Hospitals Leuven, Clinical Department of Laboratory Medicine and National Reference Center for Respiratory Pathogens, Leuven, Belgium.
KU Leuven · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: IgG anti-spike (S) antibodies arise after SARS-CoV-2 infection as well as vaccination. Levels of IgG anti-S are linked to neutralizing antibody titers and protection against (re)infection. Methods: We measured IgG anti-S and surrogate neutralizing antibody kinetics against Wild Type (WT) and 4 Variants of Concern (VOC) in health care workers (HCW) 3 and 10 months after natural infection ("infection", n=83) or vaccination (2 doses of BNT162b2) with ("hybrid immunity", n=17) or without prior SARS-CoV-2 infection ("vaccination", n=97). Results: The humoral immune response in the "vaccination" cohort was higher at 3 months, but lower at 10 months, compared to the "infection" cohort due to a faster decline. The "hybrid immunity" cohort had the highest antibody levels at 3 and 10 months with a slower decline compared to the "vaccination" cohort. Surrogate neutralizing antibody levels (expressed as %inhibition of ACE-2 binding) showed a linear relation with log10 of IgG anti-S against WT and four VOC. IgG anti-S corresponding to 90% inhibition ranged from 489 BAU/mL for WT to 1756 BAU/mL for Beta variant. Broad pseudoneutralization predicted live virus neutralization of Omicron BA.1 in 20 randomly selected high titer samples. Conclusions: Hybrid immunity resulted in the strongest humoral immune response. Antibodies induced by natural infection decreased more slowly than after vaccination, resulting in higher antibody levels at 10 months compared to vaccinated HCW without prior infection. There was a linear relationship between surrogate neutralizing activity and log10 IgG anti-S for WT and 4 VOC, although some VOC showed reduced sensitivity to pseudoneutralization.

Indexed as

Antibodies, NeutralizingCOVID-19Antibodies, ViralBNT162 VaccineHealth PersonnelHumansImmunoglobulin GSARS-CoV-2Antibodies, NeutralizingAntibodies, ViralBNT162 VaccineImmunoglobulin GCOVD-19 serological testingCOVID-19IgGimmunityneutralizing antibodiesSARS-CoV-2spikevaccination

Identifiers

PMID35784321
PMCPMC9241488
OpenAlexW4282965950

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.