Evidence map›Paper›PMID 22300718›Full record

ArticleVaccine2012

The influence of BCG vaccine strain on mycobacteria-specific and non-specific immune responses in a prospective cohort of infants in Uganda.

Elizabeth J Anderson, Emily L Webb, Patrice A Mawa, Moses Kizza, Nancy Lyadda, Margaret Nampijja, Alison M Elliott

2 registry-linked trialsOpen access · hybridAbstract read
In one paragraph

Article in Vaccine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed
2.2field-weighted citation impact, top 12% 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.

NCT02447536 phase4completednot on this mapstarted 2014, after this paper: background citation

Evaluating the Effect of Different BCG Strains on Early Life Hospital Admissions in Guinea-Bissau: A Randomised Trial

TypeinterventionalSponsorBandim Health ProjectRan2014 to 2018Enrolled12,006ConditionsMorbidity, Bacille Calmette-GuérinArmsBCG-Denmark 1331 (Statens Serum Institute), BCG-Russia-I (Serum Institute of India)
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

54 citing papers in PubMed, 88 citations in OpenAlex.

  1. Trial
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  3. Efficacy and Safety of BCG Revaccination WithFrontiers in immunology · 2022
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  5. Early BCG-Denmark and Neonatal Mortality Among Infants Weighing <2500 g: A Randomized Controlled Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2017
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  17. Evolution of theVaccine: X · 2023
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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 4 institutions in 2 countries.

Elizabeth J AndersonImperial College London School of Public Health, London W2 1PG, UK. elizabeth.anderson@doctors.org.uk
Emily L Webb
Patrice A Mawa
Moses Kizza
Nancy Lyadda
Margaret Nampijja
Alison M Elliott
Uganda Virus Research Institute · UGImperial College London · GBLondon School of Hygiene & Tropical Medicine · GBMinistry of Agriculture, Animal Industry and Fisheries · UG

Funding

TUBERCULOSIS RESEARCH MATERIALSN01AI025147 · NIAID · COLORADO STATE UNIVERSITY-FORT COLLINS · PI BRENNAN, PATRICK JOSEPH · 1992 to 1997
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Medical Research Council G0700837NIAID NIH HHS N0I-AI-25147Wellcome Trust 064693Wellcome Trust 079110Wellcome Trust 095778
6 · The paper itself

Abstract

backgroundGlobally, BCG vaccination varies in efficacy and has some non-specific protective effects. Previous studies comparing BCG strains have been small-scale, with few or no immunological outcomes and have compared TB-specific responses only. We aimed to evaluate both specific and non-specific immune responses to different strains of BCG within a large infant cohort and to evaluate further the relationship between BCG strain, scarring and cytokine responses.

methodsInfants from the Entebbe Mother and Baby Study (ISRCTN32849447) who received BCG-Russia, BCG-Bulgaria or BCG-Denmark at birth, were analysed by BCG strain group. At one year, interferon-gamma (IFN-γ), interleukin (IL)-5, IL-13 and IL-10 responses to mycobacteria-specific antigens (crude culture filtrate proteins and antigen 85) and non-mycobacterial stimuli (tetanus toxoid and phytohaemagglutinin) were measured using ELISA. Cytokine responses, scar frequency, BCG associated adverse event frequency and mortality rates were compared across groups, with adjustments for potential confounders.

resultsBoth specific and non-specific IFN-γ, IL-13 and IL-10 responses in 1341 infants differed between BCG strain groups including in response to stimulation with tetanus toxoid. BCG-Denmark immunised infants showed the highest cytokine responses. The proportion of infants who scarred differed significantly, with BCG scars occurring in 52.2%, 64.1% and 92.6% of infants immunised with BCG Russia, BCG-Bulgaria and BCG-Denmark, respectively (p<0.001). Scarred infants had higher IFN-γ and IL-13 responses to mycobacterial antigens only than infants without a scar. The BCG-Denmark group had the highest frequency of adverse events (p=0.025). Mortality differences were not significant.

conclusionsBoth specific and non-specific immune responses to the BCG vaccine differ by strain. Scarring after BCG vaccination is also strain-dependent and is associated with higher IFN-γ and IL-13 responses to mycobacterial antigens. The choice of BCG strain may be an important factor and should be evaluated when testing novel vaccine strategies that employ BCG in prime-boost sequences, or as a vector for other vaccine antigens.

Indexed as

AdultBCG VaccineCicatrixCytokinesDrug-Related Side Effects and Adverse ReactionsEnzyme-Linked Immunosorbent AssayFemaleHumansInfantInfant, NewbornLeukocytes, MononuclearMaleMycobacterium bovisPregnancyUgandaYoung AdultBCG VaccineCytokines

Identifiers

PMID22300718
PMCPMC3314967
OpenAlexW2160198221

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.