Evidence map›Paper›PMID 28771615›Full record

ArticlePloS one2017

Substantial asymptomatic submicroscopic Plasmodium carriage during dry season in low transmission areas in Senegal: Implications for malaria control and elimination.

Makhtar Niang, Laty Gaye Thiam, Rokhaya Sane, Nafissatou Diagne, Cheikh Talla, Souleymane Doucoure, Joseph Faye, Fode Diop, Abdoulaye Badiane, Babacar Diouf and 5 more

Abstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–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

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. SubclinicalResearch and reports in tropical medicine · 2025
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  11. Biology and epidemiology ofParasite epidemiology and control · 2023
    Review
  12. Article
  13. Article
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  15. Microscopic and submicroscopic infection byFrontiers in cellular and infection microbiology · 2022
    Article
  16. Assessing Asymptomatic Malaria Carriage ofChildren (Basel, Switzerland) · 2021
    Article
  17. Article
  18. Article
  19. 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

15 authors.

Makhtar NiangImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.ORCID http://orcid.org/0000-0003-0810-4595
Laty Gaye ThiamImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Rokhaya SaneImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Nafissatou DiagneFrench National Research Institute for Sustainable Development, URMITE, URMITE UMR 198, Dakar, Sénégal.
Cheikh TallaEpidemiology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Souleymane DoucoureFrench National Research Institute for Sustainable Development, URMITE, URMITE UMR 198, Dakar, Sénégal.
Joseph FayeEpidemiology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Fode DiopImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Abdoulaye BadianeEpidemiology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Babacar DioufImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Diogop CamaraImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Fatoumata Diene-SarrEpidemiology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Cheikh SokhnaFrench National Research Institute for Sustainable Development, URMITE, URMITE UMR 198, Dakar, Sénégal.
Vincent RichardEpidemiology Unit, Institut Pasteur Dakar, Dakar, Sénégal.
Aissatou Toure-BaldeImmunology Unit, Institut Pasteur Dakar, Dakar, Sénégal.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn the progress towards malaria elimination, the accurate diagnosis of low-density asymptomatic infections is critical. Low-density asymptomatic submicroscopic malaria infections may act as silent reservoirs that maintain low-level residual malaria transmission in the community. Light microscopy, the gold standard in malaria diagnosis lacks the sensitivity to detect low-level parasitaemia. In this study, the presence and prevalence of submicroscopic Plasmodium carriage were investigated to estimate the parasites reservoir among asymptomatic individuals living in low transmission areas in Dielmo and Ndiop, Senegal during the dry season.

methodsA total of 2,037 blood samples were collected during cross-sectional surveys prior the malaria transmission season in July 2013 (N = 612), June 2014 (N = 723) and June 2015 (N = 702) from asymptomatic individuals living in Dielmo and Ndiop, Senegal. Samples were used to determine the prevalence of submicroscopic Plasmodium carriage by real time PCR (qPCR) in comparison to microscopy considered as gold standard.

resultsThe prevalence of submicroscopic Plasmodium carriage was 3.75% (23/612), 12.44% (90/723) and 6.41% (45/702) in 2013, 2014 and 2015, respectively. No Plasmodium carriage was detected by microscopy in 2013 while microscopy-based prevalence of Plasmodium carriage accounted for only 0.27% (2/723) and 0.14% (1/702) in 2014 and 2015, respectively. Plasmodium falciparum accounted for the majority of submicroscopic infections and represented 86.95% (20/23), 81.11% (73/90) and 95.55 (43/45) of infections in 2013, 2014 and 2015 respectively.

conclusionLow-density submicroscopic asymptomatic Plasmodium carriage is common in the study areas during the dry season indicating that traditional measures are insufficient to assess the scale of parasite reservoir when transmission reaches very low level. Control and elimination strategies may wish to consider using molecular methods to identify parasites carriers to guide Mass screening and Treatment strategies.

Indexed as

SeasonsAdolescentAdultAgedAged, 80 and overCarrier StateChildChild, PreschoolCross-Sectional StudiesDNA, ProtozoanErythrocytesFemaleHumansInfantMalariaMaleDNA, Protozoan

Identifiers

PMID28771615
PMCPMC5542561

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.