Evidence map›Paper›PMID 32182274›Full record

Trial reportPloS one2020

Prevalence and risk factors for latent tuberculosis infection among household contacts of index cases in two South African provinces: Analysis of baseline data from a cluster-randomised trial.

Peter MacPherson, Limakatso Lebina, Kegaugetswe Motsomi, Zama Bosch, Minja Milovanovic, Andrew Ratsela, Sanjay Lala, Ebrahim Variava, Jonathan E Golub, Emily L Webb and 1 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
0.6field-weighted citation impact, top 19% 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, 2 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Active Case Finding for Tuberculosis in Migrants: a Systematic Review.Medical archives (Sarajevo, Bosnia and Herzegovina) · 2024
    Pooled it
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  3. Risk of Tuberculosis Infection in Young Children Exposed to Multidrug-resistant Tuberculosis in the TB-CHAMP Multi-site Randomized Controlled Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2025
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  5. Household Contact Tracing With Intensified Tuberculosis and Human Immunodeficiency Virus Screening in South Africa: A Cluster-Randomized Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
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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

11 authors at 6 institutions in 4 countries.

Peter MacPhersonDepartment of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, England, United Kingdom.ORCID 0000-0002-0329-9613
Limakatso LebinaSA MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa.ORCID 0000-0001-6825-0573
Kegaugetswe MotsomiSA MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa.
Zama BoschSA MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa.
Minja MilovanovicSA MRC Soweto Matlosana Collaborating Centre for HIV/AIDS and TB, Perinatal HIV Research Unit, University of the Witwatersrand, Johannesburg, South Africa.
Andrew RatselaDepartment of Internal Medicine, University of Limpopo, and Limpopo Department of Health, Polokwane, South Africa.
Sanjay LalaDepartment of Paediatrics and Child Health, Chris Hani Baragwanath Academic Hospital and University of the Witwatersrand, Johannesburg, South Africa.
Ebrahim VariavaDepartment of Internal Medicine, Klerksdorp Tshepong Hospital Complex, North West Department of Health and University of the Witwatersrand, Polokwane, South Africa.
Jonathan E GolubJohns Hopkins University Center for TB Research, Baltimore, Maryland, United States of America.
Emily L WebbMRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, England, United Kingdom.
Neil A MartinsonDepartment of Paediatrics and Child Health, Chris Hani Baragwanath Academic Hospital and University of the Witwatersrand, Johannesburg, South Africa.
South African Medical Research Council · ZAJohns Hopkins University · USUniversity of the Witwatersrand · ZALondon School of Hygiene & Tropical Medicine · GBUniversity of Limpopo · ZAUniversity of Liverpool · GB

Funding

Medical Research Council MR/R010161/1Wellcome TrustWellcome Trust WT089673
6 · The paper itself

Abstract

introductionHousehold contacts of patients with active pulmonary tuberculosis (TB) often have latent TB infection, and are at risk of progression to disease. We set out to investigate whether index TB case HIV status was linked to a higher probability of latent TB infection among household contacts. MATERIALS AND

methodsData were collected prospectively from participants in the intervention arm of a household cluster-randomised trial in two South Africa provinces (Mangaung, Free State, and Capricorn, Limpopo). In intervention group households, TB contacts underwent HIV testing and tuberculin skin testing (TST). TST induration was estimated at two cut-offs (≥5mm, ≥10mm). Multilevel Bayesian regression models estimated posterior distributions of the percentage of household contacts with TST induration ≥5mm and ≥10mm by age group, and compared the odds of latent TB infection by key risk factors including HIV status index case age and study province.

resultsA total of 2,985 household contacts of 924 index cases were assessed, with most 2,725 (91.3%) undergoing TST. HIV prevalence in household contacts was 14% and 10% in Mangaung and Capricorn respectively. Overall, 16.8% (458/2,725) had TST induration of ≥5mm and 13.1% (359/2,725) ≥10mm. In Mangaung, children aged 0-4 years had a high TST positivity prevalence compared to their peers in Capricorn (22.0% vs. 7.6%, and 20.5% vs. 2.3%, using TST thresholds of ≥5mm and ≥10mm respectively). Compared to contacts from Capricorn, household contacts living in Mangaung were more likely to have TST induration ≥5mm (odds ratio [OR]: 3.08, 95% credibility interval [CI]: 2.13-4.58) and ≥10mm (OR: 4.52, 95% CI: 3.03-6.97). There was a 90% and 92% posterior probability that the odds of TST induration ≥5mm (OR: 0.79, 95% CI: 0.56-1.14) and ≥10mm (OR: 0.77, 95% CI: 0.53-1.10) respectively were lower in household contacts of HIV-positive compared to HIV-negative index cases.

conclusionsHigh TST induration positivity, especially among young children and people living in Mangaung indicates considerable TB transmission despite high antiretroviral therapy coverage. Household contact of HIV-positive index TB cases were less likely to have evidence of latent TB infection than contacts of HIV-negative index cases.

Indexed as

AdultContact TracingFamily CharacteristicsFemaleHIV InfectionsHumansLatent TuberculosisMaleMycobacterium tuberculosisPrevalenceRisk FactorsSouth AfricaTuberculin TestTuberculosis, Pulmonary

Identifiers

PMID32182274
PMCPMC7077873
OpenAlexW3012353182

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.