Evidence map›Paper›PMID 33985447›Full record

ArticleBMC infectious diseases2021

Population structure and diversity of Plasmodium falciparum in children with asymptomatic malaria living in different ecological zones of Ghana.

Linda Eva Amoah, Zakaria Abukari, Maame Esi Dawson-Amoah, Cheikh Cambel Dieng, Eugenia Lo, Yaw Asare Afrane

Abstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Assessing the threat of artemisinin resistance: seasonal and ecological patterns ofFrontiers in cellular and infection microbiology · 2026
    Article
  4. Genetic Diversity and Allelic Distribution ofJournal of parasitology research · 2026
    Article
  5. Article
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  7. Plasmodium falciparum genetic diversity and multiplicity of infection in northern and southern Ghana assessed by amplicon sequencing.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2025
    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

6 authors.

Linda Eva AmoahDepartment of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana.
Zakaria AbukariDepartment of Immunology, Noguchi Memorial Institute for Medical Research, University of Ghana, Accra, Ghana.
Maame Esi Dawson-AmoahDepartment of Medical Microbiology, University of Ghana Medical School, University of Ghana, Accra, Ghana.
Cheikh Cambel DiengDepartment of Biological Sciences, University of North Carolina, Charlotte, NC, 28223, USA.
Eugenia LoDepartment of Biological Sciences, University of North Carolina, Charlotte, NC, 28223, USA.
Yaw Asare AfraneDepartment of Medical Microbiology, University of Ghana Medical School, University of Ghana, Accra, Ghana. yaw_afrane@yahoo.com.

Funding

Impact of insecticide resistance on the behavior and fitness of malaria vectorsR01AI123074 · NIAID · UNIVERSITY OF GHANA · PI YAW ASARE AFRANE · 2016 to 2026
$1.2M
NIAID NIH HHS R01 AI123074
6 · The paper itself

Abstract

backgroundGenetic diversity in Plasmodium falciparum populations can be used to describe the resilience and spatial distribution of the parasite in the midst of intensified intervention efforts. This study used microsatellite analysis to evaluate the genetic diversity and population dynamics of P. falciparum parasites circulating in three ecological zones of Ghana.

methodsA total of 1168 afebrile children aged between 3 to 13 years were recruited from five (5) Primary schools in 3 different ecological zones (Sahel (Tamale and Kumbungu), Forest (Konongo) and Coastal (Ada and Dodowa)) of Ghana. Asymptomatic malaria parasite carriage was determined using microscopy and PCR, whilst fragment analysis of 6 microsatellite loci was used to determine the diversity and population structure of P. falciparum parasites.

resultsOut of the 1168 samples examined, 16.1 and 39.5% tested positive for P. falciparum by microscopy and nested PCR respectively. The genetic diversity of parasites in the 3 ecological zones was generally high, with an average heterozygosity (He) of 0.804, 0.787 and 0.608 the rainy (peak) season for the Sahel, Forest and Coastal zones respectively. The mean He for the dry (off-peak) season were 0.562, 0.693 and 0.610 for the Sahel, Forest and Coastal zones respectively. Parasites from the Forest zone were more closely related to those from the Sahel than from the Coastal zone, despite the Coastal zone being closer in physical distance to the Forest zone. The fixation indexes among study sites ranged from 0.049 to 0.112 during the rainy season and 0.112 to 0.348 during the dry season.

conclusionA large asymptomatic parasite reservoir was found in the school children during both rainy and dry seasons, especially those in the Forest and Sahel savannah zones where parasites were also found to be related compared to those from the Coastal zone. Further studies are recommended to understand why despite the roll out of several malaria interventions in Ghana, high transmission still persist.

Indexed as

AdolescentCarrier StateChildChild, PreschoolDNA, ProtozoanFemaleGenetics, PopulationGenetic VariationGhanaHumansMalaria, FalciparumMaleMicrosatellite RepeatsPlasmodium falciparumSeasonsDNA, ProtozoanAsymptomatic infectionsEcological zonesGenetic diversityGhanaMicrosatellite analysisPlasmodium falciparumPopulation structure

Identifiers

PMID33985447
PMCPMC8120845

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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.