Evidence map›Paper›PMID 35472523›Full record

ArticleInternational journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases2022

Klebsiella pneumoniae Lower Respiratory Tract Infection in a South African Birth Cohort: a Longitudinal Study.

Heather J Zar, Rae MacGinty, Lesley Workman, Tiffany Burd, Gerald Smith, Landon Myer, Jonas Häggström, Mark P Nicol

Open access · goldAbstract read
In one paragraph

Article in International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.5field-weighted citation impact, top 11% 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

12 citing papers in PubMed, 17 citations in OpenAlex.

  1. Incidence of carbapenemase-resistant isolates ofNew microbes and new infections · 2026
    Article
  2. Genomic analysis ofbioRxiv : the preprint server for biology · 2026
    Article
  3. Nasopharyngeal Microbiota in South African Infants With Lower Respiratory Tract Infection: A Nested Case-Control Study of the Drakenstein Child Health Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026
    Article
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  10. Determining the aetiology of lower respiratory tract illness in children.African journal of thoracic and critical care medicine · 2024
    Article
  11. 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 1 institution in 2 countries.

Heather J ZarDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town. Electronic address: heather.zar@uct.ac.za.
Rae MacGintyDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town.
Lesley WorkmanDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town.
Tiffany BurdDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital and SA-MRC Unit on Child & Adolescent Health, University of Cape Town.
Gerald SmithCytel Inc, Sweden.
Landon MyerDivision of Epidemiology & Biostatistics, School of Public Health & Family Medicine, University of Cape Town.
Jonas HäggströmCytel Inc, Sweden.
Mark P NicolDivision of Medical Microbiology, University of Cape Town; Division of Infection and Immunity, Department of Biomedical Sciences, University of Western Australia.
University of Cape Town · ZA

Funding

The nasopharyngeal microbiota of African children and lower respiratory tract infectionU54HG009824 · NHGRI · UNIVERSITY OF CAPE TOWN · PI NICOL, MARK PATRICK, ZAR, HEATHER JOY · 2017 to 2021
$2.9M
The nasopharyngeal microbiome and respiratory disease in African childrenU01AI110466 · NIAID · UNIVERSITY OF CAPE TOWN · PI NICOL, MARK PATRICK, ZAR, HEATHER JOY · 2013 to 2016
$1.4M
NHGRI NIH HHS U54 HG009824NIAID NIH HHS U01 AI110466
6 · The paper itself

Abstract

objectivesThe role of Klebsiella pneumoniae (KP) in lower respiratory tract infection (LRTI) is not well studied. We longitudinally investigated KP colonization and its association with LRTI in a South African birth cohort.

methodsWe conducted a case-control study of infants who developed LRTI and age-matched controls, followed twice weekly through infancy. Nasopharyngeal swabs taken fortnightly and at LRTI for 33-multipex Quantitative multiplex real-time polymerase chain reaction were tested at LRTI and twice weekly from 90 days preceding LRTI. Controls were tested over the equivalent period. Multivariate models investigated the factors associated with LRTI or with KP-associated LRTI (KP-LRTI).

resultsAmong 885 infants, there were 439 LRTI episodes, of which 68 (15.5%) were KP-LRTI (OR 1.93; 95% CI 1.25-3.03). Infants with KP-LRTI were younger than those without KP-LRTI (median [IQR] 3.7 [2.1-5.9] vs 4.7 [2.8-7.9] months, P-value=0.009). Clinical features of KP and non-KP-LRTI were similar with 114 (26%) infants hospitalized. Prematurity (adjusted odds ratio [aOR] 11.86; 95% CI 5.22-26.93), HIV exposure (aOR 3.32; 95% CI 1.69-6.53), lower birthweight (aOR 0.68; 95% CI 0.51-0.91), and shorter breastfeeding time (aOR 0.79; 95% CI 0.65-0.96) were associated with KP-LRTI versus non-LRTI. These factors and younger age were associated with KP-LRTI versus non-KP-LRTI.

conclusionKP was associated with a substantial proportion of LRTI, particularly in premature or HIV-exposed infants in whom strategies for treatment and prevention should be strengthened.

Indexed as

HIV InfectionsKlebsiella InfectionsRespiratory Tract InfectionsCase-Control StudiesFemaleHumansInfantKlebsiella pneumoniaeLongitudinal StudiesRisk FactorsSouth AfricaHIVHospitalizationKlebsiella pneumoniaeLRTI

Identifiers

PMID35472523
PMCPMC9174060
OpenAlexW4225674107

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.