Evidence map›Paper›PMID 35238367›Full record

ArticleThe Journal of infectious diseases2021

Comparison of Strategies for Typhoid Conjugate Vaccine Introduction in India: A Cost-Effectiveness Modeling Study.

Theresa Ryckman, Arun S Karthikeyan, Dilesh Kumar, Yanjia Cao, Gagandeep Kang, Jeremy D Goldhaber-Fiebert, Jacob John, Nathan C Lo, Jason R Andrews

Open access · hybridAbstract readComparative Study
In one paragraph

Article in The Journal of infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Trial
  2. Programmatic Effectiveness of a Pediatric Typhoid Conjugate Vaccine Campaign in Navi Mumbai, India.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Trial
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Typhoid fever.Nature reviews. Disease primers · 2023
    Review
  11. Article
  12. Article
  13. Article
  14. Typhoid in India: An Age-old Problem With an Existing Solution.The Journal of infectious diseases · 2021
    Article
  15. 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

9 authors at 3 institutions in 2 countries.

Theresa RyckmanStanford Health Policy, Center for Health Policy and Center for Primary Care and Outcomes Research, Stanford University School of Medicine and the Freeman Spogli Institute, Stanford, California, USA.ORCID 0000-0003-3214-3228
Arun S KarthikeyanWellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India.
Dilesh KumarWellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India.
Yanjia CaoDivision of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.
Gagandeep KangWellcome Trust Research Laboratory, Christian Medical College, Vellore, Tamil Nadu, India.ORCID 0000-0002-3656-564X
Jeremy D Goldhaber-FiebertStanford Health Policy, Center for Health Policy and Center for Primary Care and Outcomes Research, Stanford University School of Medicine and the Freeman Spogli Institute, Stanford, California, USA.
Jacob JohnDepartment of Community Health, Christian Medical College, Vellore, Tamil Nadu, India.ORCID 0000-0003-3654-5099
Nathan C LoDepartment of Medicine, University of California, San Francisco, San Francisco, California, USA.
Jason R AndrewsDivision of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.
Christian Medical College, Vellore · INStanford University · USUniversity of California, San Francisco · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTyphoid fever causes substantial global mortality, with almost half occurring in India. New typhoid vaccines are highly effective and recommended by the World Health Organization for high-burden settings. There is a need to determine whether and which typhoid vaccine strategies should be implemented in India.

methodsWe assessed typhoid vaccination using a dynamic compartmental model, parameterized by and calibrated to disease and costing data from a recent multisite surveillance study in India. We modeled routine and 1-time campaign strategies that target different ages and settings. The primary outcome was cost-effectiveness, measured by incremental cost-effectiveness ratios (ICERs) benchmarked against India's gross national income per capita (US$2130).

resultsBoth routine and campaign vaccination strategies were cost-saving compared to the status quo, due to averted costs of illness. The preferred strategy was a nationwide community-based catchup campaign targeting children aged 1-15 years alongside routine vaccination, with an ICER of $929 per disability-adjusted life-year averted. Over the first 10 years of implementation, vaccination could avert 21-39 million cases and save $1.6-$2.2 billion. These findings were broadly consistent across willingness-to-pay thresholds, epidemiologic settings, and model input distributions.

conclusionsDespite high initial costs, routine and campaign typhoid vaccination in India could substantially reduce mortality and was highly cost-effective.

Indexed as

Typhoid FeverTyphoid-Paratyphoid VaccinesChildCost-Benefit AnalysisHumansImmunization ProgramsIndiaVaccinationVaccines, ConjugateTyphoid-Paratyphoid VaccinesVaccines, Conjugatecost-effectivenessenteric feverIndiamodeltyphoidvaccines

Identifiers

PMID35238367
PMCPMC8892534
OpenAlexW3214779455

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.