Evidence map›Paper›PMID 32782016›Full record

ArticleParasites & vectors2020

Molecular identification of head lice collected in Franceville (Gabon) and their associated bacteria.

Celia Scherelle Boumbanda-Koyo, Oleg Mediannikov, Nadia Amanzougaghene, Sandrine Lydie Oyegue-Liabagui, Roméo Karl Imboumi-Limoukou, Didier Raoult, Jean Bernard Lekana-Douki, Florence Fenollar

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
0.4field-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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  5. Genome sequence of anMicrobiology resource announcements · 2025
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  7. Genotyping specimens of human lice from a centenary entomological collection.Current research in parasitology & vector-borne diseases · 2025
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  8. Complete Mitogenome sequencing of the fish louseFrontiers in veterinary science · 2024
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  9. Frontiers in microbiology · 2024
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  10. Human pediculosis, a global public health problem.Infectious diseases of poverty · 2022
    Review
  11. Article
  12. High Genetic Diversity andFrontiers in cellular and infection microbiology · 2022
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  13. Article
  14. Article
  15. Article
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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

8 authors at 5 institutions in 2 countries.

Celia Scherelle Boumbanda-KoyoAix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.
Oleg MediannikovIHU-Méditerranée Infection, Marseille, France. oleguss1@gmail.com.
Nadia AmanzougagheneIHU-Méditerranée Infection, Marseille, France.
Sandrine Lydie Oyegue-LiabaguiEcole Doctorale Régionale en Infectiologie Tropicale d'Afrique Centrale, B.P. 876, Franceville, Gabon.
Roméo Karl Imboumi-LimoukouUnité d'Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), B.P. 769, Franceville, Gabon.
Didier RaoultIHU-Méditerranée Infection, Marseille, France.
Jean Bernard Lekana-DoukiUnité d'Evolution, Epidémiologie et Résistances Parasitaires (UNEEREP), Centre International de Recherches Médicales de Franceville (CIRMF), B.P. 769, Franceville, Gabon.
Florence FenollarAix Marseille Univ, IRD, AP-HM, SSA, VITROME, Marseille, France.
Aix-Marseille Université · FRCentre International de Recherches Médicales de Franceville · GAInstitut de Recherche pour le Développement · FRMéditerranée Infection Foundation · FRUniversité des Sciences de la Santé · GA

Funding

National Research Agency under the program « Investissements d'avenir » ANR-10-IAHU-03
6 · The paper itself

Abstract

backgroundPediculus humanus, which includes two ecotypes (body and head lice), is an obligate bloodsucking parasite that co-evolved with their human hosts over thousands of years, thus providing a valuable source of information to reconstruct the human migration. Pediculosis due to head lice occurred each year throughout the world and several pathogenic bacteria, which are usually associated with body lice, are increasingly detected in them. In Gabon, where this pediculosis is still widespread, there is a lack of data on genetic diversity of head lice and their associated bacteria.

methodsThis study aimed to investigate the phylogeny of head lice collected in Gabon and their associated bacteria, using molecular tools. Between 26 March and 11 April 2018, 691 head lice were collected from 86 women in Franceville. We studied the genetic diversity of these lice based on the cytochrome b gene, then we screened them for DNA of Bartonella quintana, Borrelia spp., Acinetobacter spp., Yersinia pestis, Rickettsia spp., R. prowazekii, Anaplasma spp. and C. burnetii, using real time or standard PCR and sequencing.

resultsOverall 74.6% of studied lice belonged to Clade A, 25.3% to Clade C and 0.1% to Clade E. The phylogenetic analysis of 344 head lice yielded 45 variable positions defining 13 different haplotypes from which 8 were novel. Bacterial screening revealed the presence of Borrelia spp. DNA in 3 (0.4%) of 691 head lice belonging to Clade A and infesting one individual. This Borrelia is close to B. theileri (GenBank: MN621894). Acinetobacter spp. DNA has been detected in 39 (25%) of the 156 screened lice; of these 13 (8.3%) corresponded to A. baumannii. Acinetobacter nosocomialis (n = 2) and A. pittii (n = 1) were also recorded.

conclusionsTo of our knowledge, this study is the first to investigate the genetic diversity of head lice from Gabon. It appears that Clade C is the second most important clade in Gabon, after Clade A which is known to have a global distribution. The detection of Borrelia spp. DNA in these lice highlight the potential circulation of these bacteria in Gabon.

Indexed as

Lice InfestationsPediculusAcinetobacterAnimalsBacteriaBartonella quintanaBorreliaCytochromes bFemaleGabonHumansPhylogenyCytochromes bAcinetobacter spp.Borrelia spp.GabonHead licePediculus humanus

Identifiers

PMID32782016
PMCPMC7422577
OpenAlexW3048858694

What OpenQuestion holds

Textmetadata
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.