Evidence map›Paper›PMID 26633656›Full record

ArticlePLoS neglected tropical diseases2015

Environmental Transmission of Typhoid Fever in an Urban Slum.

Adam Akullian, Eric Ng'eno, Alastair I Matheson, Leonard Cosmas, Daniel Macharia, Barry Fields, Godfrey Bigogo, Maina Mugoh, Grace John-Stewart, Judd L Walson and 2 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 46 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed, 3 pooled it
9.1field-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

46 citing papers in PubMed, 3 syntheses or guidelines pooled it, 86 citations in OpenAlex.

  1. Risk Factors for Typhoid Fever: Systematic Review.JMIR public health and surveillance · 2025
    Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Trial
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Diagnostic accuracy of three tests forPreventive medicine reports · 2025
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Spatial and Genomic Data to Characterize Endemic Typhoid Transmission.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 3 institutions in 2 countries.

Adam AkullianUniversity of Washington, School of Public Health and Community Medicine, Department of Epidemiology, Seattle, Washington, United States of America.
Eric Ng'enoKenya Medical Research Institute, Center for Global Health Research (KEMRI-CGHR), Kenya.
Alastair I MathesonUniversity of Washington, School of Public Health and Community Medicine, Department of Epidemiology, Seattle, Washington, United States of America.
Leonard CosmasDivision of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.
Daniel MachariaDivision of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.
Barry FieldsDivision of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.
Godfrey BigogoKenya Medical Research Institute, Center for Global Health Research (KEMRI-CGHR), Kenya.
Maina MugohKenya Medical Research Institute, Center for Global Health Research (KEMRI-CGHR), Kenya.
Grace John-StewartDepartments of Global Health, Medicine, Pediatrics and Epidemiology, University of Washington, Seattle, Washington, United States of America.
Judd L WalsonDepartments of Global Health, Medicine, Pediatrics and Epidemiology, University of Washington, Seattle, Washington, United States of America.
Jonathan WakefieldUniversity of Washington, Department of Statistics and Biostatistics, Seattle, Washington, United States of America.
Joel M MontgomeryDivision of Global Health Protection, Center for Global Health, Centers for Disease Control and Prevention-Kenya, Nairobi, Kenya.
University of Washington · USCenters for Disease Control and Prevention · KEKenya Medical Research Institute · KE

Funding

Prevalence and Correlates of NTS Bacteremia, Diarrhea and Carriage in KenyaU19AI090882 · NIAID · UNIVERSITY OF WASHINGTON · PI KEMNER, JOHN M · 2010 to 2014
$5.6M
Pediatric HIV-1 in Africa: Pathogenesis and ManagementK24HD054314 · NICHD · UNIVERSITY OF WASHINGTON · PI JOHN-STEWART, GRACE C. · 2006 to 2016
$1.2M
NIAID NIH HHS U19 AI090882NICHD NIH HHS K24 HD054314NICHD NIH HHS K24 HD054314-06
6 · The paper itself

Abstract

backgroundEnteric fever due to Salmonella Typhi (typhoid fever) occurs in urban areas with poor sanitation. While direct fecal-oral transmission is thought to be the predominant mode of transmission, recent evidence suggests that indirect environmental transmission may also contribute to disease spread.

methodsData from a population-based infectious disease surveillance system (28,000 individuals followed biweekly) were used to map the spatial pattern of typhoid fever in Kibera, an urban informal settlement in Nairobi Kenya, between 2010-2011. Spatial modeling was used to test whether variations in topography and accumulation of surface water explain the geographic patterns of risk.

resultsAmong children less than ten years of age, risk of typhoid fever was geographically heterogeneous across the study area (p = 0.016) and was positively associated with lower elevation, OR = 1.87, 95% CI (1.36-2.57), p <0.001. In contrast, the risk of typhoid fever did not vary geographically or with elevation among individuals more than ten years of age [corrected].

conclusionsOur results provide evidence of indirect, environmental transmission of typhoid fever among children, a group with high exposure to fecal pathogens in the environment. Spatially targeting sanitation interventions may decrease enteric fever transmission.

Indexed as

Disease Transmission, InfectiousAdolescentAdultAgedAged, 80 and overCase-Control StudiesChildChild, PreschoolFemaleGeographyHumansInfantInfant, NewbornKenyaMaleMiddle Aged

Identifiers

PMID26633656
PMCPMC4669139
OpenAlexW2195372528

What OpenQuestion holds

Textmetadata
LicenceCC0
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.