Evidence map›Paper›PMID 33758278›Full record

ArticleScientific reports2021

Accurate SARS-CoV-2 seroprevalence surveys require robust multi-antigen assays.

Christos Fotis, Nikolaos Meimetis, Nikos Tsolakos, Marianna Politou, Karolina Akinosoglou, Vaia Pliaka, Angeliki Minia, Evangelos Terpos, Ioannis P Trougakos, Andreas Mentis and 6 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.3field-weighted citation impact, top 9% 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

25 citing papers in PubMed, 38 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors at 6 institutions in 1 country.

Christos Fotis *Biomedical Systems Laboratory, National Technical University of Athens, Athens, Greece.
Nikolaos Meimetis *Biomedical Systems Laboratory, National Technical University of Athens, Athens, Greece.ORCID 0000-0003-2333-0187
Nikos Tsolakos *ProtATonce Ltd, Demokritos Science Park, Athens, Greece.
Marianna Politou *Department of Clinical Therapeutics, Alexandra General Hospital, National and Kapodistrian University of Athens, Athens, Greece.
Karolina Akinosoglou *Division of Infectious Diseases, Department of Internal Medicine, University Hospital of Patras, Patras, Greece.
Vaia PliakaProtATonce Ltd, Demokritos Science Park, Athens, Greece.
Angeliki MiniaProtATonce Ltd, Demokritos Science Park, Athens, Greece.
Evangelos TerposDepartment of Clinical Therapeutics, Alexandra General Hospital, National and Kapodistrian University of Athens, Athens, Greece.ORCID 0000-0001-5133-1422
Ioannis P TrougakosDepartment of Cell Biology and Biophysics, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece.
Andreas MentisMedicinal Microbiology Laboratory, Hellenic Pasteur Institute, Athens, Greece.
Markos MarangosDivision of Infectious Diseases, Department of Internal Medicine, University Hospital of Patras, Patras, Greece.
George PanayiotakopoulosPharmacology Laboratory, University of Patras, Patras, Greece.
Meletios A DimopoulosDepartment of Clinical Therapeutics, Alexandra General Hospital, National and Kapodistrian University of Athens, Athens, Greece.ORCID 0000-0001-8990-3254
Charalampos GogosDivision of Infectious Diseases, Department of Internal Medicine, University Hospital of Patras, Patras, Greece.
Alexandros SpyridonidisDepartment of Internal Medicine, BMT Unit and CBMDP Donor Center, University of Patras, Patras, Greece. spyridonidis@upatras.gr.
Leonidas G AlexopoulosBiomedical Systems Laboratory, National Technical University of Athens, Athens, Greece. leo@mail.ntua.gr.ORCID 0000-0003-0425-166X
National and Kapodistrian University of Athens · GRGeneral University Hospital of Patras · GRNational Centre of Scientific Research "Demokritos" · GRNational Technical University of Athens · GRUniversity of Patras · GRPasteur Hellenic Institute · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is a plethora of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) serological tests based either on nucleocapsid phosphoprotein (N), S1-subunit of spike glycoprotein (S1) or receptor binding domain (RBD). Although these single-antigen based tests demonstrate high clinical performance, there is growing evidence regarding their limitations in epidemiological serosurveys. To address this, we developed a Luminex-based multiplex immunoassay that detects total antibodies (IgG/IgM/IgA) against the N, S1 and RBD antigens and used it to compare antibody responses in 1225 blood donors across Greece. Seroprevalence based on single-antigen readouts was strongly influenced by both the antigen type and cut-off value and ranged widely [0.8% (95% CI 0.4-1.5%)-7.5% (95% CI 6.0-8.9%)]. A multi-antigen approach requiring partial agreement between RBD and N or S1 readouts (RBD&N|S1 rule) was less affected by cut-off selection, resulting in robust seroprevalence estimation [0.6% (95% CI 0.3-1.1%)-1.2% (95% CI 0.7-2.0%)] and accurate identification of seroconverted individuals.

Indexed as

AdolescentAdultAgedAntibodies, ViralAntigensCoronavirus Nucleocapsid ProteinsCOVID-19FemaleHumansImmunoassayImmunoglobulin AImmunoglobulin GImmunoglobulin MMaleMiddle AgedPhosphoproteinsAntibodies, ViralAntigensCoronavirus Nucleocapsid ProteinsImmunoglobulin AImmunoglobulin GImmunoglobulin Mnucleocapsid phosphoprotein, SARS-CoV-2PhosphoproteinsSpike Glycoprotein, Coronavirusspike protein, SARS-CoV-2

Identifiers

PMID33758278
PMCPMC7988055
OpenAlexW3136764103

What OpenQuestion holds

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Registered trials

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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.