Evidence map›Paper›PMID 42296097›Full record

SynthesisPLoS neglected tropical diseases2026

Shared risk factors for malaria and schistosomiasis co-infection: A systematic review and meta-analysis.

Max M Lang, Bethany Lyne, Christl A Donnelly, Goylette F Chami

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in PLoS neglected tropical diseases, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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

4 authors.

Max M LangNuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.
Bethany LyneNuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.
Christl A DonnellyDepartment of Statistics, University of Oxford, Oxford, United Kingdom.
Goylette F ChamiNuffield Department of Population Health, University of Oxford, Oxford, United Kingdom.ORCID https://orcid.org/0000-0002-4653-0846

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalaria and schistosomiasis are co-endemic across sub-Saharan Africa, where both diseases often co-occur, yet the shared risk factors for co-infection remain poorly synthesized.

methodsWe conducted a systematic review and meta-analysis to identify shared risk factors for malaria-Schistosoma co-infection and to narratively synthesize the statistical methodologies applied in the literature. We searched PubMed/MEDLINE, Embase, Web of Science, Global Index Medicus, and Global Health from inception to February 19, 2025 (PROSPERO CRD420250648824). We pooled effect sizes for risk factors across sociodemographic, environmental, and behavioral dimensions. Fixed-effects meta-analysis with inverse variance weighting was used to calculate pooled Odds Ratios (OR) and 95% confidence intervals (CIs). Study quality was assessed using a modified version of the Quality Assessment tool for Observational Cohort and Cross-Sectional Studies by the National Institutes of Health.

resultsWe screened 1,345 records and included 30 studies conducted across 12 African countries. A meta-analysis of 23 studies showed that schistosomiasis infection was associated with 1.27 times higher odds of malaria (OR 1.27; 95% CI: 1.17-1.39). Narrative synthesis identified age as an important predictor, with risk consistently peaking in older children and adolescents (typically 8-17 years). Associations with sex were setting-dependent: males had significantly higher odds of co-infection in community-based studies (OR 2.08; 95% CI: 1.64-2.63), whereas no significant association was found in school-based studies (OR 0.87; 95% CI: 0.64-1.19). Direct water contact was strongly associated with co-infection (OR 2.53; 95% CI: 1.60-4.00). Heterogeneity was high (I2 > 80%), warranting caution during interpretation. Only one study was categorized as high risk of bias.

conclusionThe association between malaria and schistosomiasis appears to be associated with overlapping environmental and behavioral exposures, specifically water contact in older children.

Indexed as

CoinfectionMalariaSchistosomiasisAdolescentAfrica South of the SaharaChildFemaleHumansMaleRisk Factors

Identifiers

PMID42296097
PMCPMC13268186

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.