Evidence map›Paper›PMID 25909750›Full record

ArticlePLoS neglected tropical diseases2015

Rapid emergence of multidrug resistant, H58-lineage Salmonella typhi in Blantyre, Malawi.

Nicholas A Feasey, Katherine Gaskell, Vanessa Wong, Chisomo Msefula, George Selemani, Save Kumwenda, Theresa J Allain, Jane Mallewa, Neil Kennedy, Aisleen Bennett and 7 more

Abstract 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. Cited by 98 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 6 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

98 citing papers in PubMed, 6 syntheses or guidelines pooled it.

  1. Pooled it
  2. A Systematic Review on Antimicrobial Resistance amongThe American journal of tropical medicine and hygiene · 2020
    Pooled it
  3. Pooled it
  4. Occurrence of Typhoid Fever Complications and Their Relation to Duration of Illness Preceding Hospitalization: A Systematic Literature Review and Meta-analysis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2019
    Pooled it
  5. Case Fatality Rate of Enteric Fever in Endemic Countries: A Systematic Review and Meta-analysis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2018
    Pooled it
  6. Pooled it
  7. Trial
  8. Trial
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  10. Article
  11. Review
  12. Genomic analysis ofMicrobial genomics · 2026
    Article
  13. Article
  14. Article
  15. Prevalence of Extended-Spectrum β-Lactamase-ProducingAntibiotics (Basel, Switzerland) · 2025
    Article
  16. Article
  17. Article
  18. Article
  19. Genetic heterogeneity in theMicrobial genomics · 2024
    Article
  20. Article

38 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

17 authors.

Nicholas A FeaseyMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Liverpool School of Tropical Medicine, Liverpool, United Kingdom; Wellcome Trust Sanger Institute, Hinxton, United Kingdom.
Katherine GaskellMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi.
Vanessa WongWellcome Trust Sanger Institute, Hinxton, United Kingdom.
Chisomo MsefulaMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; University of Malawi College of Medicine, Blantyre, Malawi.
George SelemaniMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi.
Save KumwendaUniversity of Malawi, The Polytechnic, Blantyre, Malawi.
Theresa J AllainUniversity of Malawi College of Medicine, Blantyre, Malawi.
Jane MallewaMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; University of Malawi College of Medicine, Blantyre, Malawi.
Neil KennedyUniversity of Malawi College of Medicine, Blantyre, Malawi.
Aisleen BennettMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Institute for Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Joram O NyirongoUniversity of Malawi College of Medicine, Blantyre, Malawi.
Patience A NyondoUniversity of Malawi College of Medicine, Blantyre, Malawi.
Madalitso D ZuluUniversity of Malawi College of Medicine, Blantyre, Malawi.
Julian ParkhillWellcome Trust Sanger Institute, Hinxton, United Kingdom.
Gordon DouganWellcome Trust Sanger Institute, Hinxton, United Kingdom.
Melita A GordonInstitute for Infection and Global Health, University of Liverpool, Liverpool, United Kingdom.
Robert S HeydermanMalawi Liverpool Wellcome Trust Clinical Research Programme, University of Malawi College of Medicine, Blantyre, Malawi; Liverpool School of Tropical Medicine, Liverpool, United Kingdom.

Funding

Wellcome Trust 098051Wellcome Trust 100890Wellcome Trust 101113/Z/13/Z084Wellcome Trust WT092152MA
6 · The paper itself

Abstract

introductionBetween 1998 and 2010, S. Typhi was an uncommon cause of bloodstream infection (BSI) in Blantyre, Malawi and it was usually susceptible to first-line antimicrobial therapy. In 2011 an increase in a multidrug resistant (MDR) strain was detected through routine bacteriological surveillance conducted at Queen Elizabeth Central Hospital (QECH).

methodsLongitudinal trends in culture-confirmed Typhoid admissions at QECH were described between 1998-2014. A retrospective review of patient cases notes was conducted, focusing on clinical presentation, prevalence of HIV and case-fatality. Isolates of S. Typhi were sequenced and the phylogeny of Typhoid in Blantyre was reconstructed and placed in a global context.

resultsBetween 1998-2010, there were a mean of 14 microbiological diagnoses of Typhoid/year at QECH, of which 6.8% were MDR. This increased to 67 in 2011 and 782 in 2014 at which time 97% were MDR. The disease predominantly affected children and young adults (median age 11 [IQR 6-21] in 2014). The prevalence of HIV in adult patients was 16.7% [8/48], similar to that of the general population (17.8%). Overall, the case fatality rate was 2.5% (3/94). Complications included anaemia, myocarditis, pneumonia and intestinal perforation. 112 isolates were sequenced and the phylogeny demonstrated the introduction and clonal expansion of the H58 lineage of S. Typhi.

conclusionsSince 2011, there has been a rapid increase in the incidence of multidrug resistant, H58-lineage Typhoid in Blantyre. This is one of a number of reports of the re-emergence of Typhoid in Southern and Eastern Africa. There is an urgent need to understand the reservoirs and transmission of disease and how to arrest this regional increase.

Indexed as

AdolescentAdultBase SequenceChildDrug Resistance, Multiple, BacterialFemaleHumansIncidenceMalawiMaleMolecular Sequence DataPhylogenyPrevalenceRetrospective StudiesSalmonella typhiSequence Analysis, DNA

Identifiers

PMID25909750
PMCPMC4409211

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Registered trials

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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.