Evidence map›Paper›PMID 35241131›Full record

ArticleBMC research notes2022

Endemicity and genetic diversity of Hepatitis delta virus among Pygmies in Cameroon, Central Africa.

Yacouba Foupouapouognigni, Jacques Delors Toumansie Mfonkou, Onana Boyomo, Antoine Gessain, Richard Njouom

Abstract read
In one paragraph

Article in BMC research notes, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
–field-weighted citation impact
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

5 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Diagnosis of HDV: From virology to non-invasive markers of fibrosis.Liver international : official journal of the International Association for the Study of the Liver · 2023
    Review
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

5 authors.

Yacouba FoupouapouognigniLaboratory of Pharmacology and Toxicology, University of Yaounde I, BP 812, Yaoundé, Cameroon.
Jacques Delors Toumansie MfonkouVirology Service, Centre Pasteur of Cameroon, BP 1274, Yaoundé, Cameroon.
Onana BoyomoLaboratory of Microbiology, University of Yaounde I, BP 812, Yaoundé, Cameroon.
Antoine GessainUnit of Epidemiology and Physiopathology of Oncogenic Viruses, URA CNRS 3015, Department of Virology, Institut Pasteur, 25-28 rue du Dr Roux, 75724, Paris Cedex 15, France.
Richard NjouomVirology Service, Centre Pasteur of Cameroon, BP 1274, Yaoundé, Cameroon. njouom@pasteur-yaounde.org.ORCID http://orcid.org/0000-0003-3112-6370

Funding

anrs ANRS12366
6 · The paper itself

Abstract

objectiveA single study conducted about three decades ago on hepatitis D virus (HDV) infection among Baka pygmies in Cameroon reported a very high anti-HDV antibodies prevalence of 46%, but HDV genetic diversity has not been studied in this population. The genetic diversity of strains from endemic ancient populations may help to understand the origin and evolutionary history of viruses. This study aimed to investigate the HDV seroprevalence and the genetic diversity in three remote Cameroonian Pygmies with chronic HBV infection.

resultsAn unusually high 69% (36/52) level of HDV infection was found among HBsAg-positive pygmies in Cameroon. HDV RNA was detected and sequenced in 38.8% (14/36). The phylogenetic analysis revealed that 9/14 strains (64.3%) were identified and classified as genotype 1 (HDV-1) and 5/14 (35.6%) as genotype 7 (HDV-7), respectively with a bootstrap value of 100%. The further analysis showed the co-circulation of highly diverse HDV genotypes HDV-1 and HDV-7 in this population. These results highlight the endemicity of HDV infection in Central Africa. The highly diverse HDV-1 and HDV-7 in pygmies suggest an African origin of HDV. However, further studies are needed with larger sample size.

Indexed as

Genetic VariationHepatitis Delta VirusCameroonGenotypeHepatitis B Surface AntigensHepatitis B virusPhylogenyPrevalenceSeroepidemiologic StudiesHepatitis B Surface AntigensCameroonGenetic diversityHepatitis DPygmies

Identifiers

PMID35241131
PMCPMC8895529

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.