Evidence map›Paper›PMID 21304967›Full record

ArticlePloS one2011

BCG vaccination: a role for vitamin D?

Maeve K Lalor, Sian Floyd, Patricia Gorak-Stolinska, Rosemary E Weir, Rose Blitz, Keith Branson, Paul E Fine, Hazel M Dockrell

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing 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.

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

20 citing papers in PubMed, 53 citations in OpenAlex.

  1. Trial
  2. Supplementing 25-Hydroxy-Vitamin DAnimals : an open access journal from MDPI · 2025
    Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Review
  8. Review
  9. On BCG Vaccine Protection from COVID-19: A Review.SN comprehensive clinical medicine · 2021
    Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. How important is vitamin D in preventing infections?Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2013
    Review
  18. Article
  19. Review
  20. Article
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

8 authors at 1 institution in 1 country.

Maeve K LalorDepartment of Immunology and Infection, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom. maeve_lalor@yahoo.com
Sian Floyd
Patricia Gorak-Stolinska
Rosemary E Weir
Rose Blitz
Keith Branson
Paul E Fine
Hazel M Dockrell
London School of Hygiene & Tropical Medicine · GB

Funding

Application of Novel Antigens and Integrated Microfluidics for Leprosy DiagnosisR01AI082575 · NIAID · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI MODLIN, ROBERT L · 2009 to 2013
$1.7M
NIAID NIH HHS R01 AI082575Wellcome TrustWellcome Trust 063558/Z/01/B
6 · The paper itself

Abstract

backgroundBCG vaccination is administered in infancy in most countries with the aim of providing protection against tuberculosis. There is increasing interest in the role of vitamin D in immunity to tuberculosis. This study objective was to determine if there was an association between circulating 25(OH)D concentrations and BCG vaccination status and cytokine responses following BCG vaccination in infants.

methodsBlood samples were collected from UK infants who were vaccinated with BCG at 3 (n = 47) and 12 (n = 37) months post BCG vaccination. These two time-points are denoted as time-point 1 and time-point 2. Two blood samples were also collected from age-matched unvaccinated infants (n = 32 and 28 respectively), as a control group. Plasma vitamin D concentrations (25(OH)D) were measured by radio-immunoassay. The cytokine IFNγ was measured in supernatants from diluted whole blood stimulated with M.tuberculosis (M.tb) PPD for 6 days.

results58% of infants had some level of hypovitaminosis (25(OH)D <30 ng/ml) at time-point 1, and this increased to 97% 9 months later. BCG vaccinated infants were almost 6 times (CI: 1.8-18.6) more likely to have sufficient vitamin D concentrations than unvaccinated infants at time-point 1, and the association remained strong after controlling for season of blood collection, ethnic group and sex. Among vaccinees, there was also a strong inverse association between IFNγ response to M.tb PPD and vitamin D concentration, with infants with higher vitamin D concentrations having lower IFNγ responses.

conclusionsVitamin D may play an immuno-regulatory role following BCG vaccination. The increased vitamin D concentrations in BCG vaccinated infants could have important implications: vitamin D may play a role in immunity induced by BCG vaccination and may contribute to non-specific effects observed following BCG vaccination.

Indexed as

BCG VaccineCytokinesHumansInfantTime FactorsTuberculosisUnited KingdomVaccinationVitamin DBCG VaccineCytokinesVitamin D

Identifiers

PMID21304967
PMCPMC3031626
OpenAlexW2089599310

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.