Evidence map›Paper›PMID 38448564›Full record

ArticleScientific reports2024

Neutralizing immunity against coronaviruses in Tanzanian health care workers.

Godfrey Barabona, Isaac Ngare, Doreen Kamori, Lilian Nkinda, Yusuke Kosugi, Ambele Mawazo, Rayi Ekwabi, Gloria Kinasa, Harrison Chuwa, Genotype to Phenotype Japan (G2P-Japan) Consortium and 3 more

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
1.6field-weighted citation impact, top 19% 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

4 citing papers in PubMed, 4 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

13 authors at 11 institutions in 2 countries.

Godfrey Barabona *Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
Isaac Ngare *Division of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
Doreen KamoriDepartment of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
Lilian NkindaDepartment of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
Yusuke KosugiDivision of Systems Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
Ambele MawazoDepartment of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania.
Rayi EkwabiAmana Regional Referral Hospital, Dar es Salaam, Tanzania.
Gloria KinasaAga Khan Hospital, Dar es Salaam, Tanzania.
Harrison ChuwaAga Khan Hospital, Dar es Salaam, Tanzania.
Genotype to Phenotype Japan (G2P-Japan) Consortium
Kei SatoCollaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
Bruno SunguyaCollaboration Unit for Infection, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan.
Takamasa UenoDivision of Infection and Immunity, Joint Research Center for Human Retrovirus Infection, Kumamoto University, Kumamoto, Japan. uenotaka@kumamoto-u.ac.jp.
Kyoto University · JPThe University of Tokyo · JPKumamoto University · JPHokkaido University · JPTokyo Metropolitan Institute of Public Health · JPUniversity of Miyazaki · JPAga Khan Hospital Dar es Salaam · TZHigashihiroshima Medical Center · JPMuhimbili University of Health and Allied Sciences · TZKyushu University · JPTokai University · JP

Funding

Japan Society for the Promotion of Science 21K19657Japan Society for the Promotion of Science 22H03119Japan Society for the Promotion of Science 22K16374Japan Society for the Promotion of Science 22KK0148
6 · The paper itself

Abstract

The ongoing vaccination efforts and exposure to endemic and emerging coronaviruses can shape the population's immunity against this group of viruses. In this study, we investigated neutralizing immunity against endemic and emerging coronaviruses in 200 Tanzanian frontline healthcare workers (HCWs). Despite low vaccination rates (19.5%), we found a high SARS-CoV-2 seroprevalence (94.0%), indicating high exposure in these HCWs. Next, we determined the neutralization capacity of antisera against human coronavirus NL63, and 229E, SARS-CoV-1, MERS-CoV and SARS-CoV-2 (including Omicron subvariants: BA.1, BQ.1.1 and XBB.1.5) using pseudovirus neutralization assay. We observed a broad range of neutralizing activity in HCWs, but no neutralization activity detected against MERS-CoV. We also observed a strong correlation between neutralizing antibody titers for SARS-CoV-2 and SARS-CoV-1, but not between other coronaviruses. Cross-neutralization titers against the newer Omicron subvariants, BQ.1.1 and XBB.1.5, was significantly reduced compared to BA.1 and BA.2 subvariants. On the other hand, the exposed vaccinated HCWs showed relatively higher median cross-neutralization titers against both the newer Omicron subvariants and SARS-CoV-1, but did not reach statistical significance. In summary, our findings suggest a broad range of neutralizing potency against coronaviruses in Tanzanian HCWs with detectable neutralizing immunity against SARS-CoV-1 resulting from SARS-CoV-2 exposure.

Indexed as

Coronavirus NL63, HumanMiddle East Respiratory Syndrome CoronavirusHealth PersonnelHumansSARS-CoV-2Seroepidemiologic StudiesTanzania

Identifiers

PMID38448564
PMCPMC10917759
OpenAlexW4392499743

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.