Evidence map›Paper›PMID 35238365›Full record

ArticleThe Journal of infectious diseases2021

Geographic Pattern of Typhoid Fever in India: A Model-Based Estimate of Cohort and Surveillance Data.

Yanjia Cao, Arun S Karthikeyan, Karthikeyan Ramanujam, Reshma Raju, Swathi Krishna, Dilesh Kumar, Theresa Ryckman, Venkata Raghava Mohan, Gagandeep Kang, Jacob John and 2 more

Abstract read
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 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Persistent Multidrug-ResistantCase reports in pediatrics · 2026
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  15. Typhoid in India: An Age-old Problem With an Existing Solution.The Journal of infectious diseases · 2021
    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

12 authors.

Yanjia CaoDivision of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.ORCID 0000-0002-8294-8924
Arun S KarthikeyanWellcome Research Unit, Christian Medical College, Vellore, India.
Karthikeyan RamanujamWellcome Research Unit, Christian Medical College, Vellore, India.
Reshma RajuWellcome Research Unit, Christian Medical College, Vellore, India.ORCID 0000-0001-7247-537X
Swathi KrishnaWellcome Research Unit, Christian Medical College, Vellore, India.ORCID 0000-0002-4084-6268
Dilesh KumarWellcome Research Unit, Christian Medical College, Vellore, India.
Theresa RyckmanCenter for Health Policy and the Center for Primary Care and Outcomes Research, Stanford University School of Medicine, Stanford, California, USA.
Venkata Raghava MohanDepartment of Community Health, Christian Medical College, Vellore, India.
Gagandeep KangWellcome Research Unit, Christian Medical College, Vellore, India.ORCID 0000-0002-3656-564X
Jacob JohnDepartment of Community Health, Christian Medical College, Vellore, India.ORCID 0000-0003-3654-5099
Jason R AndrewsDivision of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA.ORCID 0000-0002-5967-251X
Nathan C LoDeparment of Medicine, University of California, San Francisco, San Francisco, California, USA.ORCID 0000-0002-5407-2005

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTyphoid fever remains a major public health problem in India. Recently, the Surveillance for Enteric Fever in India program completed a multisite surveillance study. However, data on subnational variation in typhoid fever are needed to guide the introduction of the new typhoid conjugate vaccine in India.

methodsWe applied a geospatial statistical model to estimate typhoid fever incidence across India, using data from 4 cohort studies and 6 hybrid surveillance sites from October 2017 to March 2020. We collected geocoded data from the Demographic and Health Survey in India as predictors of typhoid fever incidence. We used a log linear regression model to predict a primary outcome of typhoid incidence.

resultsWe estimated a national incidence of typhoid fever in India of 360 cases (95% confidence interval [CI], 297-494) per 100 000 person-years, with an annual estimate of 4.5 million cases (95% CI, 3.7-6.1 million) and 8930 deaths (95% CI, 7360-12 260), assuming a 0.2% case-fatality rate. We found substantial geographic variation of typhoid incidence across the country, with higher incidence in southwestern states and urban centers in the north.

conclusionsThere is a large burden of typhoid fever in India with substantial heterogeneity across the country, with higher burden in urban centers.

Indexed as

Typhoid FeverTyphoid-Paratyphoid VaccinesCohort StudiesHumansIncidenceIndiaSalmonella typhiTyphoid-Paratyphoid Vaccinesenteric fevergeospatial model Indiapublic healthsalmonellatyphoid fevervaccination

Identifiers

PMID35238365
PMCPMC8892532

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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.