Evidence map›Paper›PMID 33352301›Full record

ArticleClinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases2021

Extrapulmonary tuberculosis among migrants in Europe, 1995 to 2017.

Sally E Hayward, Kieran Rustage, Laura B Nellums, Marieke J van der Werf, Teymur Noori, Delia Boccia, Jon S Friedland, Sally Hargreaves

Open access · hybridAbstract read
In one paragraph

Article in Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
0.5field-weighted citation impact, top 21% 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

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 50 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Epidemiology of extrapulmonary tuberculosis, Alameda County, California, 2010-2021.Journal of clinical tuberculosis and other mycobacterial diseases · 2026
    Article
  4. Article
  5. Host- and pathogen-related determinants of pulmonaryEuropean respiratory review : an official journal of the European Respiratory Society · 2026
    Review
  6. Population structure and spatial distribution ofFrontiers in microbiology · 2026
    Article
  7. Article
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  14. Extrapulmonary tuberculosis in The Netherlands, an epidemiologic overview, 1993-2022.Journal of clinical tuberculosis and other mycobacterial diseases · 2025
    Article
  15. Article
  16. Article
  17. Tuberculosis rates in migrants in low-incidence European countries, according to country of origin, reporting country and recency of immigration, 2014 to 2020.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2025
    Article
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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

8 authors at 3 institutions in 2 countries.

Sally E HaywardInstitute for Infection and Immunity, St George's, University of London, London, UK; Faculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK. Electronic address: shayward@sgul.ac.uk.
Kieran RustageInstitute for Infection and Immunity, St George's, University of London, London, UK.
Laura B NellumsInstitute for Infection and Immunity, St George's, University of London, London, UK; Division of Epidemiology and Public Health, School of Medicine, University of Nottingham, Nottingham, UK.
Marieke J van der WerfEuropean Centre for Disease Prevention and Control (ECDC), Solna, Sweden.
Teymur NooriEuropean Centre for Disease Prevention and Control (ECDC), Solna, Sweden.
Delia BocciaFaculty of Public Health and Policy, London School of Hygiene & Tropical Medicine, London, UK.
Jon S FriedlandInstitute for Infection and Immunity, St George's, University of London, London, UK.
Sally HargreavesInstitute for Infection and Immunity, St George's, University of London, London, UK.
St George's, University of London · GBEuropean Centre for Disease Prevention and Control · SELondon School of Hygiene & Tropical Medicine · GB

Funding

Department of Health NIHR300072Medical Research Council MR/V027549/1
6 · The paper itself

Abstract

objectivesThe proportion of tuberculosis (TB) cases occurring in migrants in Europe is increasing. Extrapulmonary TB poses challenges in diagnosis and treatment and causes serious morbidity and mortality, yet its extent in migrant populations is unclear. We assessed patterns of extrapulmonary TB in migrants across the European Union (EU)/European Free Trade Association (EFTA). We investigated the proportion of extrapulmonary TB cases among migrants versus non-migrants, and variations by specific site of disease, reporting European region, and migrant region of origin.

methodsWe carried out a cross-sectional secondary database analysis, utilizing 23 years of data collected between 1995 and 2017 from the European Surveillance System of the European Centre for Disease Prevention and Control for 32 EU/EFTA countries.

resultsIn total, 1 270 896 TB cases were included, comprising 326 987 migrants (25.7%) and 943 909 non-migrants (74.3%). Of TB cases among migrants, 45.2% (n = 147 814) were extrapulmonary compared to 21.7% (n = 204 613) among non-migrants (p < 0.001). Lymphatic, bone/joint and peritoneal/digestive TB were more common among migrant than non-migrant extrapulmonary cases. A lower proportion of extrapulmonary TB was seen in Eastern Europe (17.4%, n = 98 656 of 566 170) and Southern Europe (29.6%, n = 62 481 of 210 828) compared with Western (35.7%, n = 89 498 of 250 517) and Northern Europe (41.8%, n = 101 792 of 243 381). Migrants from South-East Asia and Sub-Saharan Africa were at highest risk of extrapulmonary disease, with 62.0% (n = 55 401 of 89 353) and 54.5% (n = 38 327 of 70 378) of cases, respectively, being extrapulmonary.

conclusionsAmong TB cases in the EU/EFTA, extrapulmonary disease is significantly more common in migrants than in non-migrants. There is a need to improve clinical awareness of extrapulmonary TB and to integrate its detection into screening programmes.

Indexed as

Transients and MigrantsTuberculosisCross-Sectional StudiesEuropeEuropean UnionHumansEuropeExtrapulmonary tuberculosisHealth services researchMigrantTuberculosis

Identifiers

PMID33352301
PMCPMC8437049
OpenAlexW3111114800

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.