Evidence map›Paper›PMID 27417280›Full record

ArticleThorax2016

Recent TB transmission, clustering and predictors of large clusters in London, 2010-2012: results from first 3 years of universal MIRU-VNTR strain typing.

Esther L Hamblion, Arnaud Le Menach, Laura F Anderson, Maeve K Lalor, Tim Brown, Ibrahim Abubakar, Charlotte Anderson, Helen Maguire, Sarah R Anderson, Public Health England Strain Typing Project Board

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Thorax, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 1 pooled it
6.0field-weighted citation impact, top 3% 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

31 citing papers in PubMed, 1 synthesis or guideline pooled it, 51 citations in OpenAlex.

  1. Pooled it
  2. Article
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  6. Article
  7. Review
  8. Diversity ofTuberculosis research and treatment · 2021
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  9. Article
  10. Genotyping and drug susceptibility testing ofNew microbes and new infections · 2020
    Article
  11. Article
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  13. Observational
  14. Observational
  15. Article
  16. Article
  17. Article
  18. Article
  19. New microbes and new infections · 2018
    Article
  20. Reduced transmission of Mycobacterium africanum compared to Mycobacterium tuberculosis in urban West Africa.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2018
    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

10 authors at 2 institutions in 2 countries.

Esther L HamblionField Epidemiology Services (Victoria), Public Health England, London, UK.
Arnaud Le MenachField Epidemiology Services (Victoria), Public Health England, London, UK European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Control and Prevention, Stockholm, Sweden.
Laura F AndersonTuberculosis Section, Respiratory Disease Department, Public Health England, London, UK.
Maeve K LalorTuberculosis Section, Respiratory Disease Department, Public Health England, London, UK.
Tim BrownNational Mycobacterium Reference Laboratory, Institute of Cell and Molecular Science (ICMS), London, UK.
Ibrahim AbubakarTuberculosis Section, Respiratory Disease Department, Public Health England, London, UK Centre for Infectious Disease Epidemiology, University College London, Mortimer Market Centre, London, UK.
Charlotte AndersonField Epidemiology Services (Victoria), Public Health England, London, UK.
Helen MaguireField Epidemiology Services (Victoria), Public Health England, London, UK European Programme for Intervention Epidemiology Training (EPIET), European Centre for Disease Control and Prevention, Stockholm, Sweden.
Sarah R AndersonField Epidemiology Services (Victoria), Public Health England, London, UK.
Public Health England Strain Typing Project Board
Public Health England · GBEuropean Centre for Disease Prevention and Control · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe incidence of TB has doubled in the last 20 years in London. A better understanding of risk groups for recent transmission is required to effectively target interventions. We investigated the molecular epidemiological characteristics of TB cases to estimate the proportion of cases due to recent transmission, and identify predictors for belonging to a cluster.

methodsThe study population included all culture-positive TB cases in London residents, notified between January 2010 and December 2012, strain typed using 24-loci multiple interspersed repetitive units-variable number tandem repeats. Multivariable logistic regression analysis was performed to assess the risk factors for clustering using sociodemographic and clinical characteristics of cases and for cluster size based on the characteristics of the first two cases.

resultsThere were 10 147 cases of which 5728 (57%) were culture confirmed and 4790 isolates (84%) were typed. 2194 (46%) were clustered in 570 clusters, and the estimated proportion attributable to recent transmission was 34%. Clustered cases were more likely to be UK born, have pulmonary TB, a previous diagnosis, a history of substance abuse or alcohol abuse and imprisonment, be of white, Indian, black-African or Caribbean ethnicity. The time between notification of the first two cases was more likely to be <90 days in large clusters.

conclusionsUp to a third of TB cases in London may be due to recent transmission. Resources should be directed to the timely investigation of clusters involving cases with risk factors, particularly those with a short period between the first two cases, to interrupt onward transmission of TB.

Indexed as

Cluster AnalysisMycobacterium tuberculosisAdultFemaleGenotypeHumansIncidenceLondonMalePredictive Value of TestsRetrospective StudiesRisk FactorsSensitivity and SpecificityTuberculosis, PulmonaryClinical EpidemiologyTuberculosis

Identifiers

PMID27417280
PMCPMC4975838
OpenAlexW2465139718

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.