Evidence map›Paper›PMID 25529292›Full record

ArticleVaccine2015

Factors associated with tuberculosis infection, and with anti-mycobacterial immune responses, among five year olds BCG-immunised at birth in Entebbe, Uganda.

Swaib Abubaker Lule, Patrice A Mawa, Gyaviira Nkurunungi, Margaret Nampijja, Dennison Kizito, Florence Akello, Lawrence Muhangi, Alison M Elliott, Emily L Webb

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in Vaccine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04383925 (Randomized Trial Evaluating the Non-specific Effects of Different BCG Strains in Guinea-Bissau), which is not on this map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
0.7field-weighted citation impact, top 30% 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.

NCT04383925 phase4completednot on this mapstarted 2020, after this paper: background citation

Randomized Trial Evaluating the Non-specific Effects of Different BCG Strains in Guinea-Bissau: Effects on Early-life Mortality and Morbidity

TypeinterventionalSponsorBandim Health ProjectRan2020 to 2022Enrolled16,390ConditionsDeath, Infant, Morbidity, InfantArmsBCG-Japan, BCG-Russia
3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 31 citations in OpenAlex.

  1. Trial
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  4. Review
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  12. Tuberculosis susceptibility and protection in children.The Lancet. Infectious diseases · 2019
    Review
  13. Article
  14. Article
  15. Article
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  17. Article
  18. Probiotics, antibiotics and the immune responses to vaccines.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Review
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

9 authors at 4 institutions in 2 countries.

Swaib Abubaker LuleMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda. Electronic address: swaiblule@gmail.com.
Patrice A MawaMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda.
Gyaviira NkurunungiMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda.
Margaret NampijjaMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda.
Dennison KizitoMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda.
Florence AkelloEntebbe Hospital, PO Box 29, Entebbe, Uganda.
Lawrence MuhangiMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda.
Alison M ElliottMRC/UVRI Uganda Research Unit on AIDS, PO Box 49, Entebbe, Uganda; London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK.
Emily L WebbLondon School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK.
Uganda Virus Research Institute · UGLondon School of Hygiene & Tropical Medicine · GBMinistry of Agriculture, Animal Industry and Fisheries · UGUniversity of London · GB

Funding

Wellcome Trust 063693Wellcome Trust 079110Wellcome Trust 095778Wellcome Trust 100714
6 · The paper itself

Abstract

backgroundBCG is used widely as the sole licensed vaccine against tuberculosis, but it has variable efficacy and the reasons for this are still unclear. No reliable biomarkers to predict future protection against, or acquisition of, TB infection following immunisation have been identified. Lessons from BCG could be valuable in the development of effective tuberculosis vaccines.

objectivesWithin the Entebbe Mother and Baby Study birth cohort in Uganda, infants received BCG at birth. We investigated factors associated with latent tuberculosis infection (LTBI) and with cytokine response to mycobacterial antigen at age five years. We also investigated whether cytokine responses at one year were associated with LTBI at five years of age.

methodsBlood samples from age one and five years were stimulated using crude culture filtrates of Mycobacterium tuberculosis in a six-day whole blood assay. IFN-γ, IL-5, IL-13 and IL-10 production was measured. LTBI at five years was determined using T-SPOT.TB(®) assay. Associations with LTBI at five years were assessed using multivariable logistic regression. Multiple linear regression with bootstrapping was used to determine factors associated with cytokine responses at age five years.

resultsLTBI prevalence was 9% at age five years. Only urban residence and history of TB contact/disease were positively associated with LTBI. BCG vaccine strain, LTBI, HIV infection, asymptomatic malaria, growth z-scores, childhood anthelminthic treatment and maternal BCG scar were associated with cytokine responses at age five. Cytokine responses at one year were not associated with acquisition of LTBI by five years of age.

conclusionAlthough multiple factors influenced anti-myocbacterial immune responses at age five, factors likely to be associated with exposure to infectious cases (history of household contact, and urban residence) dominated the risk of LTBI.

Indexed as

VaccinationAdaptive ImmunityBCG VaccineChild, PreschoolComorbidityFemaleHelminthiasisHIV InfectionsHumansInfantInterferon-gammaInterleukin-10Interleukin-13Interleukin-5Latent TuberculosisMalariaBCG VaccineIL10 protein, humanIL13 protein, humanIL5 protein, humanInterferon-gammaInterleukin-10Interleukin-13Interleukin-5Bacille Calmette–GuerinCrude culture filtrate proteinHelminthHIVPregnancyTuberculosis

Identifiers

PMID25529292
PMCPMC4317190
OpenAlexW2062633170

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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.