Evidence map›Paper›PMID 35123673›Full record

ArticleThe Lancet. Infectious diseases2022

Estimating the effect of vaccination on antimicrobial-resistant typhoid fever in 73 countries supported by Gavi: a mathematical modelling study.

Ruthie Birger, Marina Antillón, Joke Bilcke, Christiane Dolecek, Gordon Dougan, Andrew J Pollard, Kathleen M Neuzil, Isabel Frost, Ramanan Laxminarayan, Virginia E Pitzer

Open access · hybridAbstract read
In one paragraph

Article in The Lancet. Infectious diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
7.6field-weighted citation impact, top 2% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 56 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  15. Routine immunization againstThe Lancet regional health. Southeast Asia · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 4 countries.

Ruthie BirgerDepartment of Epidemiology of Microbial Diseases and Public Health Modeling Unit, Yale School of Public Health, Yale University, New Haven, CT, USA.
Marina AntillónSwiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland.
Joke BilckeCentre for Health Economics Research and Modelling Infectious Diseases, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium.
Christiane DolecekOxford Centre for Global Health Research, Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK; Mahidol Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Gordon DouganDepartment of Medicine, University of Cambridge, Cambridge, UK.
Andrew J PollardOxford Vaccine Group, University of Oxford, Oxford, UK; National Institute for Health Research Oxford Biomedical Research Centre, Oxford, UK.
Kathleen M NeuzilCenter for Vaccine Development and Global Health, University of Maryland School of Medicine, Baltimore, MD, USA.
Isabel FrostCenter for Disease Dynamics, Economics & Policy, New Delhi, India; Imperial College London, London, UK.
Ramanan LaxminarayanCenter for Disease Dynamics, Economics & Policy, New Delhi, India; High Meadows Environmental Institute, Princeton University, Princeton, NJ, USA.
Virginia E PitzerCenter for Disease Dynamics, Economics & Policy, New Delhi, India. Electronic address: virginia.pitzer@yale.edu.
Swiss Tropical and Public Health Institute · CHUniversity of Antwerp · BEUniversity of Cambridge · GBUniversity of Maryland, Baltimore · USYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMultidrug resistance and fluoroquinolone non-susceptibility (FQNS) are major concerns for the epidemiology and treatment of typhoid fever. The 2018 prequalification of the first typhoid conjugate vaccine (TCV) by WHO provides an opportunity to limit the transmission and burden of antimicrobial-resistant typhoid fever.

methodsWe combined output from mathematical models of typhoid transmission with estimates of antimicrobial resistance from meta-analyses to predict the burden of antimicrobial-resistant typhoid fever across 73 lower-income countries eligible for support from Gavi, the Vaccine Alliance. We considered FQNS and multidrug resistance separately. The effect of vaccination was predicted on the basis of forecasts of vaccine coverage. We explored how the potential effect of vaccination on the prevalence of antimicrobial resistance varied depending on key model parameters.

findingsThe introduction of routine immunisation with TCV at age 9 months with a catch-up campaign up to age 15 years was predicted to avert 46-74% of all typhoid fever cases in 73 countries eligible for Gavi support. Vaccination was predicted to reduce the relative prevalence of antimicrobial-resistant typhoid fever by 16% (95% prediction interval [PI] 0-49). TCV introduction with a catch-up campaign was predicted to avert 42·5 million (95% PI 24·8-62·8 million) cases and 506 000 (95% PI 187 000-1·9 million) deaths caused by FQNS typhoid fever, and 21·2 million (95% PI 16·4-26·5 million) cases and 342 000 (95% PI 135 000-1·5 million) deaths from multidrug-resistant typhoid fever over 10 years following introduction.

interpretationOur results indicate the benefits of prioritising TCV introduction for countries with a high avertable burden of antimicrobial-resistant typhoid fever.

fundingThe Bill & Melinda Gates Foundation.

Indexed as

Anti-Infective AgentsTyphoid FeverTyphoid-Paratyphoid VaccinesAnti-Bacterial AgentsHumansInfantModels, TheoreticalVaccinationVaccines, ConjugateAnti-Bacterial AgentsAnti-Infective AgentsTyphoid-Paratyphoid VaccinesVaccines, Conjugate

Identifiers

PMID35123673
PMCPMC9021026
OpenAlexW4210526933

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.