Evidence map›Paper›PMID 33960696›Full record

ArticleTransboundary and emerging diseases2022

Maintenance of neutralizing antibodies over ten months in convalescent SARS-CoV-2 afflicted patients.

Sissy Therese Sonnleitner, Martina Prelog, Bianca Jansen, Chantal Rodgarkia-Dara, Sarah Gietl, Carmen Maria Schönegger, Stephan Koblmüller, Christian Sturmbauer, Wilfried Posch, Giovanni Almanzar and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Transboundary and emerging diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.9field-weighted citation impact, top 23% 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

8 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
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  5. Actions and attitudes on the immunized patients against SARS-CoV-2.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2022
    Review
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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

15 authors at 7 institutions in 4 countries.

Sissy Therese SonnleitnerDepartment of Virology, Medical Laboratory, Dr. Gernot Walder GmbH, Ausservillgraten, Austria.ORCID https://orcid.org/0000-0002-6419-0224
Martina PrelogDepartment of Pediatrics, Pediatric Rheumatology/Special Immunology, University Hospital Wuerzburg, Wuerzburg, Germany.
Bianca JansenDepartment of Virology, Medical Laboratory, Dr. Gernot Walder GmbH, Ausservillgraten, Austria.
Chantal Rodgarkia-DaraTHP Medical products, Vienna, Austria.
Sarah GietlDepartment of Virology, Medical Laboratory, Dr. Gernot Walder GmbH, Ausservillgraten, Austria.
Carmen Maria SchöneggerDepartment of Virology, Medical Laboratory, Dr. Gernot Walder GmbH, Ausservillgraten, Austria.
Stephan KoblmüllerInstitute of Biology, University of Graz, Graz, Austria.ORCID https://orcid.org/0000-0002-1024-3220
Christian SturmbauerInstitute of Biology, University of Graz, Graz, Austria.
Wilfried PoschDivision of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria.ORCID https://orcid.org/0000-0001-8955-7654
Giovanni AlmanzarDepartment of Pediatrics, Pediatric Rheumatology/Special Immunology, University Hospital Wuerzburg, Wuerzburg, Germany.
Hanna JuryDepartment of Pediatrics, Pediatric Rheumatology/Special Immunology, University Hospital Wuerzburg, Wuerzburg, Germany.
Tom LoneyDepartment of Basic Medical Sciences, College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates.ORCID https://orcid.org/0000-0003-1687-6587
Alexander TichyDepartment for Biomedical Sciences, University of Veterinary Medicine Vienna, Vienna, Austria.
Norbert NowotnyDepartment of Basic Medical Sciences, College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates.ORCID https://orcid.org/0000-0002-3548-571X
Gernot WalderDepartment of Virology, Medical Laboratory, Dr. Gernot Walder GmbH, Ausservillgraten, Austria.
Voestalpine (Austria) · ATUniversitätsklinikum Würzburg · DEInnsbruck Medical University · ATUniversity of Graz · ATUniversity of Veterinary Medicine Vienna · ATHiTec Marketing · ATMohammed Bin Rashid University of Medicine and Health Sciences · AE

Funding

Austrian Research Promotion Agency (FFG) 35863961
6 · The paper itself

Abstract

Knowledge of the level and duration of protective immunity against SARS-CoV-2 after primary infection is of crucial importance for preventive approaches. Currently, there is a lack of evidence on the persistence of specific antibodies. We investigated the generation and maintenance of neutralizing antibodies of convalescent SARS-CoV-2-afflicted patients over a ten-month period post-primary infection using an immunofluorescence assay, a commercial chemiluminescent immunoassay and an in-house enzyme-linked neutralization assay. We present the successful application of an improved version of the plaque-reduction neutralization assay which can be analysed optometrically to simplify data interpretation. Based on the results of the enzyme-linked neutralization assay, neutralizing antibodies were maintained in 77.4% of convalescent individuals without relevant decay over ten months. Furthermore, a positive correlation between severity of infection and antibody titre was observed. In conclusion, SARS-CoV-2-afflicted individuals have been proven to be able to develop and maintain neutralizing antibodies over a period of ten months after primary infection. Findings suggest long-lasting presumably protective humoral immune responses after wild-type infection.

Indexed as

COVID-19SARS-CoV-2AnimalsAntibodies, NeutralizingAntibodies, ViralImmunity, HumoralAntibodies, NeutralizingAntibodies, ViralIgG antibodiesimmunityneutralization testpersistenceSARS-CoV-2

Identifiers

PMID33960696
PMCPMC8242897
OpenAlexW3159083814

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.