Evidence map›Paper›PMID 25647726›Full record

ArticleeLife2015

Vitamin A supplements, routine immunization, and the subsequent risk of Plasmodium infection among children under 5 years in sub-Saharan Africa.

Maria-Graciela Hollm-Delgado, Frédéric B Piel, Daniel J Weiss, Rosalind E Howes, Elizabeth A Stuart, Simon I Hay, Robert E Black

Open access · goldAbstract read
In one paragraph

Article in eLife, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
0.7field-weighted citation impact, top 23% 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

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Micronutrient status, food security, anaemia,Frontiers in nutrition · 2024
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  5. 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

7 authors at 2 institutions in 2 countries.

Maria-Graciela Hollm-DelgadoDepartment of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, United States.
Frédéric B PielEvolutionary Ecology of Infectious Disease Group, Department of Zoology, University of Oxford, Oxford, United Kingdom.
Daniel J WeissSpatial Ecology and Epidemiology Group, Department of Zoology, University of Oxford, Oxford, United Kingdom.
Rosalind E HowesSpatial Ecology and Epidemiology Group, Department of Zoology, University of Oxford, Oxford, United Kingdom.
Elizabeth A StuartDepartments of Mental Health and Biostatistics, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, United States.
Simon I HaySpatial Ecology and Epidemiology Group, Department of Zoology, University of Oxford, Oxford, United Kingdom.
Robert E BlackDepartment of International Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, United States.
University of Oxford · GBJohns Hopkins University · US

Funding

Wellcome Trust 095066
6 · The paper itself

Abstract

Recent studies, partly based on murine models, suggest childhood immunization and vitamin A supplements may confer protection against malaria infection, although strong evidence to support these theories in humans has so far been lacking. We analyzed national survey data from children aged 6-59 months in four sub-Saharan African countries over an 18-month time period, to determine the risk of Plasmodium spp. parasitemia (n=8390) and Plasmodium falciparum HRP-2 (PfHRP-2)-related antigenemia (n=6121) following vitamin A supplementation and standard vaccination. Bacille Calmette Guerin-vaccinated children were more likely to be PfHRP-2 positive (relative risk [RR]=4.06, 95% confidence interval [CI]=2.00-8.28). No association was identified with parasitemia. Measles and polio vaccination were not associated with malaria. Children receiving vitamin A were less likely to present with parasitemia (RR=0.46, 95% CI=0.39-0.54) and antigenemia (RR=0.23, 95% CI=0.17-0.29). Future studies focusing on climate seasonality, placental malaria and HIV are needed to characterize better the association between vitamin A and malaria infection in different settings.

Indexed as

Dietary SupplementsImmunizationAfrica South of the SaharaAge FactorsAntigens, ProtozoanBCG VaccineChild, PreschoolFemaleHumansInfantMalaria, FalciparumMaleMeasles VaccineParasitemiaPlasmodium falciparumPoliovirus VaccinesAntigens, ProtozoanBCG VaccineHRP-2 antigen, Plasmodium falciparumMeasles VaccinePoliovirus VaccinesProtozoan ProteinsVitamin AAfricachild healthepidemiologyglobal healthhumanmalariaPlasmodiumvaccinationvitamin A

Identifiers

PMID25647726
PMCPMC4383226
OpenAlexW2113607278

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.