Evidence map›Paper›PMID 33072707›Full record

ArticleFrontiers in public health2020

Antibody Profiling of COVID-19 Patients in an Urban Low-Incidence Region in Northern Germany.

Werner Solbach, Julia Schiffner, Insa Backhaus, David Burger, Ralf Staiger, Bettina Tiemer, Andreas Bobrowski, Timothy Hutchings, Alexander Mischnik

Open access · goldAbstract read
In one paragraph

Article in Frontiers in public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 3 pooled it
0.7field-weighted citation impact, top 17% 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

16 citing papers in PubMed, 3 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pooled it
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  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Infection fatality rate of COVID-19 inferred from seroprevalence data.Bulletin of the World Health Organization · 2021
    Review
  13. Estimating the false-negative test probability of SARS-CoV-2 by RT-PCR.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2020
    Review
  14. Article
  15. SARS-CoV-2-IgG response is different in COVID-19 outpatients and asymptomatic contact persons.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2020
    Article
  16. Article
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

9 authors at 3 institutions in 2 countries.

Werner SolbachCenter for Infection and Inflammation Research, University of Lübeck, Lübeck, Germany.
Julia SchiffnerHealth Protection Authority, Lübeck, Germany.
Insa BackhausHealth Protection Authority, Lübeck, Germany.
David BurgerMunicipal Statistics Department, Lübeck, Germany.
Ralf StaigerGemeinschaftspraxis Huextertor, Lübeck, Germany.
Bettina TiemerLaboraerztliche Gemeinschaftspraxis Lübeck, Lübeck, Germany.
Andreas BobrowskiLaboraerztliche Gemeinschaftspraxis Lübeck, Lübeck, Germany.
Timothy HutchingsMunicipal Statistics Department, Lübeck, Germany.
Alexander MischnikHealth Protection Authority, Lübeck, Germany.
Praxis für Humangenetik · DESapienza University of Rome · ITUniversity of Lübeck · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A vast majority of COVID-19 cases present with mild or moderate symptoms. The study region is in an urban and well-defined environment in a low-incidence region in Northern Germany. In the present study, we explored the dynamics of the antibody response with respect to onset, level and duration in patients with confirmed SARS-CoV-2 infection. Anti-SARS-CoV-2 IgG and IgA were detected by automated enzyme-linked immunosorbent assay (ELISA) of SARS-CoV-2 infected patients monitored by the Health Protection Authority. This explorative monocentric study shows IgA and IgG antibody profiles from 118 patients with self-reported mild to moderate, or no COVID-19 related symptoms after laboratory-confirmed infection with SARS-CoV-2. We found that 21.7% and 18.1% of patients were seronegative for IgA or IgG, respectively. Clinically, most of the seronegative patients showed no to only moderate symptoms. With regard to antibody profiling 82% of all patients developed sustainable antibodies (IgG) and 78% (IgA) 3 weeks or later after the infection. Our data indicate that antibody-positivity is a useful indicator of a previous SARS-CoV-2 infection. Negative antibodies do not rule out SARS-CoV-2 infection. Future studies are needed to determine the functionality of the antibodies in terms of neutralization capacity leading to personal protection and prevention ability to transmit the virus as well as to protect after vaccination.

Indexed as

COVID-19Antibodies, ViralGermanyHumansIncidenceSARS-CoV-2Antibodies, ViralCOVID-19herd immunityIgAIgGimmunoglobulinSARS-CoV-2seroprevalence

Identifiers

PMID33072707
PMCPMC7536334
OpenAlexW3033251148

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.