Evidence map›Paper›PMID 33614298›Full record

ArticlePeerJ2021

Is there a link between pre-existing antibodies acquired due to childhood vaccinations or past infections and COVID-19? A case control study.

Bilge Sumbul, Hilmi Erdem Sumbul, Ramazan Azim Okyay, Erdinç Gülümsek, Ahmet Rıza Şahin, Baris Boral, Burhan Fatih Koçyiğit, Mostafa Alfishawy, Jeffrey Gold, Alİ Muhittin Tasdogan

Open access · goldAbstract read
In one paragraph

Article in PeerJ, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
0.8field-weighted citation impact, top 26% 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

9 citing papers in PubMed, 13 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

10 authors at 4 institutions in 1 country.

Bilge SumbulDepartment of Medical Microbiology, Bezmialem Vakıf University, Faculty of Medicine, Istanbul, Turkey.
Hilmi Erdem SumbulDepartment of Internal Medicine, University of Health Sciences, Adana Health Practice and Research Center, Adana, Turkey.
Ramazan Azim OkyayDepartment of Public Health, Kahramanmaraş Sütçü İmam University, Faculty of Medicine, Kahramanmaraş, Turkey.
Erdinç GülümsekDepartment of Internal Medicine, University of Health Sciences, Adana Health Practice and Research Center, Adana, Turkey.
Ahmet Rıza ŞahinDepartment of Infectious Diseases and Clinical Microbiology, Kahramanmaraş Sütçü İmam University, Faculty of Medicine, Kahramanmaraş, Turkey.
Baris BoralDepartment of Microbiology, University of Health Sciences, Adana Health Practice and Research Center, Adana, Turkey.
Burhan Fatih KoçyiğitDepartment of Physical Medicine and Rehabilitation, Kahramanmaraş Sütçü İmam University, Faculty of Medicine, Kahramanmaraş, Turkey.
Mostafa AlfishawyInfectious Diseases Consultants and Academic Researchers of Egypt (IDCARE), Cairo, Egypt.
Jeffrey GoldWorld Organization, Watkinsville, GA, USA.ORCID 0000-0001-8388-6799
Alİ Muhittin TasdoganDepartment of Anesthesiology and Reanimation, Hasan Kalyoncu University, Faculty of Health Sciences, Gaziantep, Turkey.
Kahramanmaraş Sütçü İmam University · TRSağlık Bilimleri Üniversitesi · TRBezmiâlem Vakıf Üniversitesi · TRHasan Kalyoncu University · TR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is growing evidence indicating that children are less affected from COVID-19. Some authors speculate that childhood vaccinations may provide some cross-protection against COVID-19. In this study, our aim was to compare the circulating antibody titers for multiple childhood vaccine antigens, as an indicator of the state of immune memory between patients with COVID-19 and healthy controls, with a specific aim to identify the association between disease severity and antibody titrations which may indicate a protective function related to vaccine or disease induced memory.

methodsThis study is a case-control study including 53 patients with COVID-19 and 40 healthy volunteers. COVID-19 severity was divided into three groups: asymptomatic, mild and severe. We measured the same set of antibody titers for vaccine antigens, and a set of biochemical and infection markers, in both the case and control groups.

resultsRubella ( DISCUSSION: Our study supports the hypothesis that pre-existing immune memory, as monitored using circulating antibodies, acquired from childhood vaccinations, or past infections confer some protection against COVID-19. Randomized controlled studies are needed to support a definitive conclusion.

Indexed as

Antibody titersCOVID-19Cross-protectionPandemic

Identifiers

PMID33614298
PMCPMC7879941
OpenAlexW3126860072

What OpenQuestion holds

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LicenceCC BY
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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.