Cited by 547Tuberculosis Research and EpidemiologyInfectious Diseases and TuberculosisHIV, TB, and STIs Epidemiology

The global prevalence of latent tuberculosis: A systematic review and meta-analysis

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Cohen, Adam, Mathiasen, Victor Dahl, Schön, Thomas, Wejse, Christian·2019·European Respiratory Journal

Abstract

In 1999, the World Health Organization (WHO) estimated that one-third of the world's population had latent tuberculosis infection (LTBI), which was recently updated to one-fourth. However, this is still based on controversial assumptions in combination with tuberculin skin test (TST) surveys. Interferon-γ release assays (IGRAs) with a higher specificity than TST have since been widely implemented, but never used to estimate the global LTBI prevalence. We conducted a systematic review and meta-analysis of LTBI estimates based on both IGRA and TST results published between 2005 and 2018. Regional and global estimates of LTBI prevalence were calculated. Stratification was performed for low, intermediate and high TB incidence countries and a pooled estimate for each area was calculated using a random effects model. Among 3280 studies screened, we included 88 studies from 36 countries with 41 IGRA (n=67 167) and 67 TST estimates (n=284 644). The global prevalence of LTBI was 24.8% (95% CI 19.7–30.0%) and 21.2% (95% CI 17.9–24.4%), based on IGRA and a 10-mm TST cut-off, respectively. The prevalence estimates correlated well to WHO incidence rates (Rs=0.70, p<0.001). In the first study of the global prevalence of LTBI derived from both IGRA and TST surveys, we found that one-fourth of the world's population is infected. This is of relevance, as both tests, although imperfect, are used to identify individuals eligible for preventive therapy. Enhanced efforts are needed targeting the large pool of latently infected individuals, as this constitutes an enormous source of potential active tuberculosis.

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Research works printed but not linked: 3

  1. [6]6. Styblo K. The relationship between the risk of tuberculous infection and the risk of developing infectious tuberculosis. Bull Int Union Tuberc Lung Dis 1985; 60: 117-119.
  2. [17]17. Murthy M, Selvam S, Jesuraj N, et al. Two-step tuberculin skin testing in school-going adolescents with initial 0- 4 millimeter responses in a high tuberculosis prevalence setting in south India. PLoS One 2013; 8: e71470. 19 QuantiFERON-TB Gold (QFT) ELISA Package Insert -UK. www.quantiferon.com/wp-content/uploads/2017/04/ English_QFT_ELISA_R04_082016.pdf Date last accessed: February 28, 2019. Date last updated: August, 2016.
  3. [99]99. Agaya J, Nnadi CD, Odhiambo J, et al. Tuberculosis and latent tuberculosis infection among healthcare workers in Kisumu, Kenya. Trop Med Int Health 2015; 20: 1797-1804. 102

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Authors
Cohen, A., Mathiasen, V. D., Schön, T., & Wejse, C.
Affiliations
  • St Olav's University Hospital (NO)
  • Linköping University (SE)
  • Bandim Health Project (GW)
Venue
European Respiratory Journal
Published
2019-06-20
Volume
54
Issue
3
Pages
1900655
ISSN
  • 0903-1936 (ISSN-L)
  • 1399-3003
OpenAlex
W2950875755
Cited by
547
References
123
Citations by year
2026: 61 · 2025: 78 · 2024: 94 · 2023: 89 · 2022: 101 · 2021: 73 · 2020: 47 · 2019: 4
FWCI
7.86
Type
journal article
Language
en
Open access
Locations
  • European Respiratory Journal (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Novo Nordisk (NNF15OC0018034)
  • Hjärt-Lungfonden (20150236)
  • Forskningsrådet om Hälsa, Arbetsliv och Välfärd (201602043)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Health Sciences › Medicine › Surgery › Infectious Diseases and Tuberculosis
  • Social Sciences › General Social Sciences › HIV, TB, and STIs Epidemiology
Keywords
latent tuberculosis infection, global prevalence, interferon-gamma release assay, tuberculin skin test, tuberculosis prophylaxis
MeSH terms
Algorithms, Communicable Disease Control, Humans, Tuberculin Test, Global Health, World Health Organization, Incidence, Prevalence, Latent Tuberculosis, Interferon-gamma Release Tests

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