Evidence map›Paper›PMID 21811646›Full record

ArticlePLoS neglected tropical diseases2011

Emergence of a globally dominant IncHI1 plasmid type associated with multiple drug resistant typhoid.

Kathryn E Holt, Minh Duy Phan, Stephen Baker, Pham Thanh Duy, Tran Vu Thieu Nga, Satheesh Nair, A Keith Turner, Ciara Walsh, Séamus Fanning, Sinéad Farrell-Ward and 6 more

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed, 4 pooled it
10.6field-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

89 citing papers in PubMed, 4 syntheses or guidelines pooled it, 166 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. A systematic review of antimicrobial resistance of typhoidalThe Indian journal of medical research · 2019
    Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Whole-Genome Sequencing Analysis of Drug-ResistantPathogens (Basel, Switzerland) · 2025
    Article
  13. Article
  14. Antibiotic-ResistantFood science of animal resources · 2025
    Review
  15. Article
  16. Review
  17. Emergence of carbapenem-resistantFrontiers in microbiology · 2025
    Article
  18. Facile Synthesis ofPharmaceuticals (Basel, Switzerland) · 2024
    Article
  19. Article
  20. Article

29 more citing papers are in PubMed but not listed here.

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

16 authors at 9 institutions in 7 countries.

Kathryn E HoltWellcome Trust Sanger Institute, Hinxton, Cambridge, United Kingdom. kholt@unimelb.edu.au
Minh Duy Phan
Stephen Baker
Pham Thanh Duy
Tran Vu Thieu Nga
Satheesh Nair
A Keith Turner
Ciara Walsh
Séamus Fanning
Sinéad Farrell-Ward
Shanta Dutta
Sam Kariuki
François-Xavier Weill
Julian Parkhill
Gordon Dougan
John Wain
Wellcome Sanger Institute · GBOxford University Clinical Research Unit · VNUniversity College Dublin · IEFood Safety Authority of Ireland · IEHospital for Tropical Diseases · VNInstitut Pasteur · FRKenya Medical Research Institute · KENational Institute of Cholera and Enteric Diseases · INUniversity of Queensland · AU

Funding

Wellcome Trust
6 · The paper itself

Abstract

Typhoid fever, caused by Salmonella enterica serovar Typhi (S. Typhi), remains a serious global health concern. Since their emergence in the mid-1970s multi-drug resistant (MDR) S. Typhi now dominate drug sensitive equivalents in many regions. MDR in S. Typhi is almost exclusively conferred by self-transmissible IncHI1 plasmids carrying a suite of antimicrobial resistance genes. We identified over 300 single nucleotide polymorphisms (SNPs) within conserved regions of the IncHI1 plasmid, and genotyped both plasmid and chromosomal SNPs in over 450 S. Typhi dating back to 1958. Prior to 1995, a variety of IncHI1 plasmid types were detected in distinct S. Typhi haplotypes. Highly similar plasmids were detected in co-circulating S. Typhi haplotypes, indicative of plasmid transfer. In contrast, from 1995 onwards, 98% of MDR S. Typhi were plasmid sequence type 6 (PST6) and S. Typhi haplotype H58, indicating recent global spread of a dominant MDR clone. To investigate whether PST6 conferred a selective advantage compared to other IncHI1 plasmids, we used a phenotyping array to compare the impact of IncHI1 PST6 and PST1 plasmids in a common S. Typhi host. The PST6 plasmid conferred the ability to grow in high salt medium (4.7% NaCl), which we demonstrate is due to the presence in PST6 of the Tn6062 transposon encoding BetU.

Indexed as

Anti-Bacterial AgentsDNA, BacterialDrug Resistance, Multiple, BacterialHumansMicrobial Sensitivity TestsPhylogenyPlasmidsPolymorphism, Single NucleotideReal-Time Polymerase Chain ReactionRetrospective StudiesSalmonella typhiSequence Analysis, DNATyphoid FeverAnti-Bacterial AgentsDNA, Bacterial

Identifiers

PMID21811646
PMCPMC3139670
OpenAlexW2040974259

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.