Evidence map›Paper›PMID 37523402›Full record

ArticlePloS one2023

Epidemiology of malaria, schistosomiasis, and geohelminthiasis amongst children 3-15 years of age during the dry season in Northern Cameroon.

Francis N Nkemngo, Lymen W G Raissa, Derrick N Nebangwa, Asongha M Nkeng, Alvine Kengne, Leon M J Mugenzi, Yvan G Fotso-Toguem, Murielle J Wondji, Robert A Shey, Daniel Nguiffo-Nguete and 6 more

Abstract read
In one paragraph

Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 3 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

8 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
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  6. Article
  7. Pathogens (Basel, Switzerland) · 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

16 authors.

Francis N NkemngoCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.ORCID 0000-0003-4292-8440
Lymen W G RaissaCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Derrick N NebangwaFaculty of Life Science and Medicine, King's College London, New Hunt's House, London, United Kingdom.
Asongha M NkengCentre for Infection Biology and Translational Research (CIBiT), Forzi Institute, Buea, Cameroon.
Alvine KengneDepartment of Animal Biology and Physiology, Parasitology and Ecology Laboratory, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.
Leon M J MugenziCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Yvan G Fotso-ToguemCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.ORCID 0000-0001-6185-5692
Murielle J WondjiCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Robert A SheyDepartment of Biochemistry and Molecular Biology, Faculty of Science, University of Buea, Buea, Cameroon.
Daniel Nguiffo-NgueteCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Jerome Fru-ChoDepartment of Microbiology and Parasitology, Faculty of Science, University of Buea, Buea, Cameroon.
Cyrille NdoCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.
Flobert NjiokouDepartment of Animal Biology and Physiology, Parasitology and Ecology Laboratory, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon.
Joanne P WebsterDepartment of Pathobiology and Population Sciences, Royal Veterinary College, University of London, Herts, United Kingdom.
Samuel WanjiDepartment of Microbiology and Parasitology, Faculty of Science, University of Buea, Buea, Cameroon.
Charles S WondjiCentre for Research in Infectious Diseases (CRID), Yaoundé, Cameroon.

Funding

Department of Health
6 · The paper itself

Abstract

backgroundThe double burden of malaria and helminthiasis in children poses an obvious public health challenge, particularly in terms of anemia morbidity. While both diseases frequently geographically overlap, most studies focus on mono-infection and general prevalence surveys without molecular analysis. The current study investigated the epidemiological determinants of malaria, schistosomiasis, and geohelminthiasis transmission among children in the North Region of Cameroon. METHODOLOGY: School and pre-school children aged 3-15 year-of-age were enrolled from three communities in March 2021 using a community cross-sectional design. Capillary-blood samples were obtained, and each was examined for malaria parasites using rapid-diagnostic-test (RDT), microscopy, and PCR while hemoglobin level was measured using a hemoglobinometer. Stool samples were analyzed for Schistosoma mansoni, S. guineensis, and soil-transmitted-helminthiasis (STH) infections using the Kato Katz method, and urine samples were assessed for the presence of S. haematobium eggs (including hybrids) using the standard urine filtration technique.

resultA malaria prevalence of 56% (277/495) was recorded by PCR as opposed to 31.5% (156/495) by microscopy and 37.8% (186/495) by RDT. Similarly, schistosomiasis was observed at prevalence levels of up to 13.3% (66/495) overall [S. haematobium (8.7%); S. mansoni (3.8%); mixed Sh/Sm (0.6%); mixed Sh/Sm/Sg (0.2%). Both infections were higher in males and the 3-9 year-of-age groups. A high frequency of PCR reported P. falciparum mono-infection of 81.9% (227/277) and mixed P. falciparum/P. malariae infection of 17.3% (48/277) was observed. Malaria-helminths co-infections were observed at 13.1% (65/495) with marked variation between P. falciparum/S. haematobium (50.8%, 33/65); P. falciparum/S. mansoni (16.9%, 11/65) and P. falciparum/Ascaris (9.2%, 6/65) (χ2 = 17.5, p = 0.00003). Anemia prevalence was 32.9% (163/495), categorically associated with P. falciparum (45.8%, 104/227), Pf/Sh (11.5%, 26/227), and Pf/Sm (3.9%, 9/227) polyparasitism.

conclusionPolyparasitism with malaria and helminth infections is common in school-aged children despite periodic long-lasting insecticide-treated nets (LLINs) distribution and regular school-based praziquantel (for schistosomiasis) and albendazole (for STH) campaigns. Co-existence of Plasmodium parasites and helminths infections notably Schistosoma species among children may concurrently lead to an increase in Plasmodium infection with an enhanced risk of anemia, highlighting the necessity of an integrated approach for disease control interventions.

Indexed as

AnemiaHelminthiasisMalariaMalaria, FalciparumSchistosomiasisAdolescentAnimalsCameroonChildChild, PreschoolCross-Sectional StudiesFecesHumansMalePrevalenceSchistosoma mansoniSoil

Identifiers

PMID37523402
PMCPMC10389741

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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.