Evidence map›Paper›PMID 23419028›Full record

ArticleBMC microbiology2013

Human Streptococcus agalactiae strains in aquatic mammals and fish.

Christian M J Delannoy, Margaret Crumlish, Michael C Fontaine, Jolinda Pollock, Geoff Foster, Mark P Dagleish, James F Turnbull, Ruth N Zadoks

Abstract read
In one paragraph

Article in BMC microbiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Virulence and resistance adaptation of Streptococcus agalactiae Ib/ST261 infecting bullfrogs in Hainan, China between 2019 and 2023.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2026
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  8. Towards a holistic epidemiology ofFrontiers in bioinformatics · 2026
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  9. Rapid detection ofFrontiers in microbiology · 2026
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  13. Evidence of a novel sublineage ofMicrobial genomics · 2025
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  17. TwoFrontiers in microbiology · 2025
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  18. Antibiotic Resistance and Serotypes Distribution inPolish journal of microbiology · 2024
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  19. Susceptibility of Tambaqui (Microorganisms · 2024
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  20. Biology · 2024
    Review

28 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

8 authors.

Christian M J DelannoyInstitute of Aquaculture, School of Natural Sciences, University of Stirling, Stirling, UK.
Margaret Crumlish
Michael C Fontaine
Jolinda Pollock
Geoff Foster
Mark P Dagleish
James F Turnbull
Ruth N Zadoks

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn humans, Streptococcus agalactiae or group B streptococcus (GBS) is a frequent coloniser of the rectovaginal tract, a major cause of neonatal infectious disease and an emerging cause of disease in non-pregnant adults. In addition, Streptococcus agalactiae causes invasive disease in fish, compromising food security and posing a zoonotic hazard. We studied the molecular epidemiology of S. agalactiae in fish and other aquatic species to assess potential for pathogen transmission between aquatic species and humans.

methodsIsolates from fish (n = 26), seals (n = 6), a dolphin and a frog were characterized by pulsed-field gel electrophoresis, multilocus sequence typing and standardized 3-set genotyping, i.e. molecular serotyping and profiling of surface protein genes and mobile genetic elements.

resultsFour subpopulations of S. agalactiae were identified among aquatic isolates. Sequence type (ST) 283 serotype III-4 and its novel single locus variant ST491 were detected in fish from Southeast Asia and shared a 3-set genotype identical to that of an emerging ST283 clone associated with invasive disease of adult humans in Asia. The human pathogenic strain ST7 serotype Ia was also detected in fish from Asia. ST23 serotype Ia, a subpopulation that is normally associated with human carriage, was found in all grey seals, suggesting that human effluent may contribute to microbial pollution of surface water and exposure of sea mammals to human pathogens. The final subpopulation consisted of non-haemolytic ST260 and ST261 serotype Ib isolates, which belong to a fish-associated clonal complex that has never been reported from humans.

conclusionsThe apparent association of the four subpopulations of S. agalactiae with specific groups of host species suggests that some strains of aquatic S. agalactiae may present a zoonotic or anthroponotic hazard. Furthermore, it provides a rational framework for exploration of pathogenesis and host-associated genome content of S. agalactiae strains.

Indexed as

Molecular TypingAnimalsAnuraAsiaCluster AnalysisFishesGenotypeMammalsMolecular EpidemiologyStreptococcal InfectionsStreptococcus agalactiae

Identifiers

PMID23419028
PMCPMC3585737

What OpenQuestion holds

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LicenceCC BY
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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.