Evidence map›Paper›PMID 27865390›Full record

ArticleTuberculosis (Edinburgh, Scotland)2016

Alternative BCG delivery strategies improve protection against Mycobacterium tuberculosis in non-human primates: Protection associated with mycobacterial antigen-specific CD4 effector memory T-cell populations.

S Sharpe, A White, C Sarfas, L Sibley, F Gleeson, A McIntyre, R Basaraba, S Clark, G Hall, E Rayner and 3 more

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Tuberculosis (Edinburgh, Scotland), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 92 papers.

0numbers the graph read from it
0cells of the map it votes in
92citing papers in PubMed
9.4field-weighted citation impact, top 1% 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

92 citing papers in PubMed, 141 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Route of BCG administration determines success.Human vaccines & immunotherapeutics · 2026
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  9. Peptide-Based Strategies AgainstPharmaceuticals (Basel, Switzerland) · 2025
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  10. Review
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  15. Review
  16. Article
  17. Article
  18. Low-doseFrontiers in immunology · 2024
    Article
  19. Article
  20. Article

32 more citing papers are in PubMed but not listed here.

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

13 authors at 4 institutions in 2 countries.

S SharpePublic Health England, Porton Down, Wiltshire, SP4 0JG, UK. Electronic address: sally.sharpe@phe.gov.uk.
A WhitePublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
C SarfasPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
L SibleyPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
F GleesonChurchill Hospital, Headington, Oxford, UK.
A McIntyreChurchill Hospital, Headington, Oxford, UK.
R BasarabaColorado State University, Fort Collins, CO, USA.
S ClarkPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
G HallPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
E RaynerPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
A WilliamsPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
P D MarshPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
M DennisPublic Health England, Porton Down, Wiltshire, SP4 0JG, UK.
Public Health England · GBChurchill Hospital · GBColorado State University · USDefence Science and Technology Laboratory · GB

Funding

Department of Health
6 · The paper itself

Abstract

Intradermal (ID) BCG injection provides incomplete protection against TB in humans and experimental models. Alternative BCG vaccination strategies may improve protection in model species, including rhesus macaques. This study compares the immunogenicity and efficacy of BCG administered by ID and intravenous (IV) injection, or as an intratracheal mucosal boost (ID + IT), against aerosol challenge with Mycobacterium tuberculosis Erdman strain. Disease pathology was significantly reduced, and survival improved, by each BCG vaccination strategy, relative to unvaccinated animals. However, IV induced protection surpassed that achieved by all other routes, providing an opportunity to explore protective immunological mechanisms using antigen-specific IFN-γ ELISpot and polychromatic flow cytometry assays. IFN-γ spot forming units and multifunctional CD4 T-cell frequencies increased significantly following each vaccination regimen and were greatest following IV immunisation. Vaccine-induced multifunctional CD4 T-cells producing IFN-γ and TNF-α were associated with reduced disease pathology following subsequent M.tb challenge; however, high frequencies of this population following M.tb infection correlated with increased pathology. Cytokine producing T-cells primarily occupied the CD4 transitional effector memory phenotype, implicating this population as central to the mycobacterial response, potentially contributing to the stringent control observed in IV vaccinated animals. This study demonstrates the protective efficacy of IV BCG vaccination in rhesus macaques, offering a valuable tool for the interrogation of immunological mechanisms and potential correlates of protection.

Indexed as

AerosolsAnimalsAntigens, BacterialBCG VaccineCD4-Positive T-LymphocytesDisease ProgressionImmunity, CellularImmunologic MemoryInjections, IntradermalInjections, IntravenousInterferon-gammaMacaca mulattaMaleMycobacterium tuberculosisTracheaTuberculosisAerosolsAntigens, BacterialBCG VaccineInterferon-gammaAerosol challengeBCGBiomarkersNon-human primateTuberculosis

Identifiers

PMID27865390
PMCPMC5120991
OpenAlexW2527697187

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.