Evidence map›Paper›PMID 32677939›Full record

SynthesisBMC medicine2020

Invasive non-typhoidal Salmonella infections in sub-Saharan Africa: a systematic review on antimicrobial resistance and treatment.

Bieke Tack, Jolien Vanaenrode, Jan Y Verbakel, Jaan Toelen, Jan Jacobs

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in BMC medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 87 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
87citing papers in PubMed, 3 pooled it
11.8field-weighted citation impact, top 1% 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

87 citing papers in PubMed, 3 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Trial
  5. Article
  6. Observational
  7. Article
  8. Multivalent vaccines for invasiveInfection and immunity · 2026
    Review
  9. Article
  10. Environmental health insights · 2026
    Review
  11. Article
  12. Persistence of non-typhoidalFrontiers in microbiology · 2026
    Review
  13. Article
  14. Article
  15. SevereInfection and drug resistance · 2026
    Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

27 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

5 authors at 2 institutions in 1 country.

Bieke TackDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium. btack@itg.be.ORCID 0000-0002-1129-0440
Jolien VanaenrodeFaculty of Medicine, KU Leuven, Leuven, Belgium.
Jan Y VerbakelDepartment of Public Health and Primary Care, KU Leuven, Leuven, Belgium.
Jaan ToelenDepartment of Development and Regeneration, KU Leuven, Leuven, Belgium.
Jan JacobsDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
KU Leuven · BEInstituut voor Tropische Geneeskunde · BE

Funding

Fonds Wetenschappelijk Onderzoek 1153220N
6 · The paper itself

Abstract

backgroundNon-typhoidal Salmonella (NTS) are a frequent cause of invasive infections in sub-Saharan Africa. They are frequently multidrug resistant (co-resistant to ampicillin, trimethoprim-sulfamethoxazole, and chloramphenicol), and resistance to third-generation cephalosporin and fluoroquinolone non-susceptibility have been reported. Third-generation cephalosporins and fluoroquinolones are often used to treat invasive NTS infections, but azithromycin might be an alternative. However, data on antibiotic treatment efficacy in invasive NTS infections are lacking. In this study, we aimed to assess the spatiotemporal distribution of antimicrobial resistance in invasive NTS infections in sub-Saharan Africa and to describe the available evidence and recommendations on antimicrobial treatment.

methodsWe conducted a systematic review of all available literature on antimicrobial resistance and treatment in invasive NTS infections. We performed a random effects meta-analysis to assess the temporal distribution of multidrug resistance, third-generation cephalosporin resistance, and fluoroquinolone non-susceptibility. We mapped these data to assess the spatial distribution. We provided a narrative synthesis of the available evidence and recommendations on antimicrobial treatment.

resultsSince 2001, multidrug resistance was observed in 75% of NTS isolates from all sub-Saharan African regions (95% confidence interval, 70-80% and 65-84%). Third-generation cephalosporin resistance emerged in all sub-Saharan African regions and was present in 5% (95% confidence interval, 1-10%) after 2010. Fluoroquinolone non-susceptibility emerged in all sub-Saharan African regions but did not increase over time. Azithromycin resistance was reported in DR Congo. There were no reports on carbapenem resistance. We did not find high-quality evidence on the efficacy of antimicrobial treatment. There were no supranational guidelines. The "Access group" antibiotics ampicillin, trimethoprim-sulfamethoxazole, and chloramphenicol and "Watch group" antibiotics ceftriaxone, cefotaxime, and ciprofloxacin were recommended as the first-choice antibiotics in national guidelines or reviews. These also recommended (a switch to) oral fluoroquinolones or azithromycin.

conclusionsIn addition to the widespread multidrug resistance in invasive NTS infections in sub-Saharan Africa, resistance to third-generation cephalosporins and fluoroquinolone non-susceptibility was present in all regions. There was a lack of data on the efficacy of antimicrobial treatment in these infections, and supranational evidence-based guidelines were absent.

Indexed as

Africa South of the SaharaAnti-Bacterial AgentsDrug Resistance, BacterialHumansSalmonella InfectionsAnti-Bacterial AgentsAntimicrobial resistanceAntimicrobial treatmentInvasive infectionsNon-typhoidal SalmonellaSub-Saharan Africa

Identifiers

PMID32677939
PMCPMC7367361
OpenAlexW3042408010

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.