Evidence map›Paper›PMID 28867842›Full record

ArticleBulletin of the World Health Organization2017

Pneumococcal conjugate vaccines and hospitalization of children for pneumonia: a time-series analysis, South Africa, 2006-2014.

Alane Izu, Fatima Solomon, Susan A Nzenze, Azwifarwi Mudau, Elizabeth Zell, Katherine L O'Brien, Cynthia G Whitney, Jennifer Verani, Michelle Groome, Shabir A Madhi

Open access · diamondAbstract readComparative Study
In one paragraph

Article in Bulletin of the World Health Organization, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
2.2field-weighted citation impact, top 12% 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

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. [The new 15-valent pneumococcal conjugate vaccine for the prevention ofJournal of preventive medicine and hygiene · 2023
    Article
  6. Optimization of Flavonoid Extraction fromMolecules (Basel, Switzerland) · 2022
    Article
  7. Article
  8. Article
  9. Vaccine confidence: the keys to restoring trust.Human vaccines & immunotherapeutics · 2020
    Article
  10. Article
  11. Article
  12. Article
  13. Impact of 13-Valent Pneumococcal Conjugate Vaccine on Meningitis and Pneumonia Hospitalizations in Children aged <5 Years in Senegal, 2010-2016.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2019
    Article
  14. 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 1 country.

Alane IzuMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, 2193, South Africa.
Fatima SolomonMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, 2193, South Africa.
Susan A NzenzeNational Research Foundation: SARCHI on Vaccine Preventable Diseases, University of the Witwatersrand, Johannesburg, South Africa.
Azwifarwi MudauMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, 2193, South Africa.
Elizabeth ZellStat-Epi Associates, Inc., Ponte Verde Beach, United States of America (USA).
Katherine L O'BrienInternational Vaccine Access Center, Johns Hopkins Bloomberg School of Public Health, Baltimore, USA.
Cynthia G WhitneyCenters for Disease Control and Prevention, Atlanta, USA.
Jennifer VeraniCenters for Disease Control and Prevention, Atlanta, USA.
Michelle GroomeNational Research Foundation: SARCHI on Vaccine Preventable Diseases, University of the Witwatersrand, Johannesburg, South Africa.
Shabir A MadhiMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, York Road, Parktown, 2193, South Africa.
Centers for Disease Control and Prevention · USJohns Hopkins University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo assess the impact of immunization with pneumococcal conjugate vaccines on all-cause pneumonia hospitalizations among children in Soweto, South Africa.

methodsWe used data collected at the Chris Hani Baragwanath Hospital in Soweto between 2006 and 2014 - i.e. before and after April 2009, when a pneumococcal conjugate vaccine was first included in South Africa's routine immunization programme. Using a Bayesian generalized seasonal autoregressive moving-average model and the data collected in 2006-2008, we estimated the numbers of children that would have been hospitalized for pneumonia between 2010 and 2014 if no pneumococcal conjugate vaccines had been used. These estimates were then compared with the corresponding numbers of hospitalizations observed.

findingsBetween 2006 and 2014, 26 778 children younger than five years - including 3388 known to be infected with human immunodeficiency virus (HIV) - were admitted to the study hospital for pneumonia. We estimated that, for the children known to be infected with HIV and for the other children, pneumococcal conjugate vaccines reduced the numbers of hospitalizations for pneumonia in 2014 by 33% (50% credible interval, CrI: 6 to 52) and 39% (50% CrI: 24 to 50), respectively. In the study hospital in 2012-2014, as a result of immunizations with these vaccines, there were an estimated 3100 fewer pneumonia hospitalizations of children younger than five years.

conclusionIn our study hospital, following the introduction of pneumococcal conjugate vaccines into the national immunization programme, there were significant reductions in pneumonia hospitalizations among children.

Indexed as

Academic Medical CentersAge DistributionBayes TheoremChild, PreschoolDatabases, FactualFemaleHIV InfectionsHospitalizationHumansImmunization ProgramsInfantInterrupted Time Series AnalysisMalePneumococcal VaccinesPneumoniaSouth AfricaPneumococcal VaccinesVaccines, Conjugate

Identifiers

PMID28867842
PMCPMC5578378
OpenAlexW2752251938

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.