Evidence map›Paper›PMID 20668530›Full record

ArticlePloS one2010

Population genetics of Streptococcus dysgalactiae subspecies equisimilis reveals widely dispersed clones and extensive recombination.

David J McMillan, Debra E Bessen, Marcos Pinho, Candace Ford, Gerod S Hall, José Melo-Cristino, Mário Ramirez

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
4.9field-weighted citation impact, top 5% 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

36 citing papers in PubMed, 70 citations in OpenAlex.

  1. Emerging trends in invasiveEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2026
    Article
  2. Article
  3. Genomic and patient epidemiology ofMicrobiology spectrum · 2026
    Article
  4. Article
  5. Microorganisms · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Clinical microbiology reviews · 2024
    Review
  10. Article
  11. Article
  12. Article
  13. Genomic epidemiology ofFrontiers in microbiology · 2023
    Article
  14. Streptococcus dysgalactiae subsp. equisimilis from invasive and non-invasive infections in Spain: combining epidemiology, molecular characterization, and genetic diversity.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2021
    Article
  15. Article
  16. New Insights onFrontiers in microbiology · 2021
    Article
  17. Molecular subtyping and antimicrobial susceptibility ofJournal of veterinary science · 2020
    Article
  18. Pathogenicity Characterization of Prevalent-TypeFrontiers in microbiology · 2020
    Article
  19. Article
  20. Review
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

7 authors at 3 institutions in 3 countries.

David J McMillanBacterial Pathogenesis Laboratory, The Queensland Institute of Medical Research and Griffith Medical Research College, Herston, Queensland, Australia.
Debra E Bessen
Marcos Pinho
Candace Ford
Gerod S Hall
José Melo-Cristino
Mário Ramirez
New York Medical College · USUniversity of Lisbon · PTQIMR Berghofer Medical Research Institute · AU

Funding

Population genomics of Streptococcus pyogenesR01AI065572 · NIAID · NEW YORK MEDICAL COLLEGE · PI BESSEN, DEBRA E · 2005 to 2009
$1.8M
EVOLUTION OF GROUP A STREPTOCOCCIR01GM060793 · NIGMS · YALE UNIVERSITY · PI BESSEN, DEBRA E · 2000 to 2004
$1.1M
NIAID NIH HHS AI-065572NIAID NIH HHS R01 AI065572NIGMS NIH HHS GM-060793NIGMS NIH HHS R01 GM060793
6 · The paper itself

Abstract

backgroundStreptococcus dysgalactiae subspecies equisimilis (SDSE) is an emerging global pathogen that can colonize and infect humans. Although most SDSE isolates possess the Lancefield group G carbohydrate, a significant minority have the group C carbohydrate. Isolates are further sub-typed on the basis of differences within the emm gene. To gain a better understanding of their molecular epidemiology and evolutionary relationships, multilocus sequence typing (MLST) analysis was performed on SDSE isolates collected from Australia, Europe and North America. METHODOLOGY/PRINCIPAL

findingsThe 178 SDSE isolates, representing 37 emm types, segregate into 80 distinct sequence types (STs) that form 17 clonal complexes (CCs). Eight STs recovered from all three continents account for >50% of the isolates. Thus, a small number of STs are highly prevalent and have a wide geographic distribution. Both ST and CC strongly correlate with group carbohydrate. In contrast, eleven STs were associated with >1 emm type, suggestive of recombinational replacements involving the emm gene; furthermore, 35% of the emm types are associated with genetically distant STs. Data also reveal a history of extensive inter- and intra-species recombination involving the housekeeping genes used for MLST. Sequence analysis of single locus variants identified through goeBURST indicates that genetic change mediated by recombination occurred approximately 4.4 times more frequently than by point mutation. CONCLUSIONS/SIGNIFICANCE: A few genetic lineages with an intercontinental distribution dominate among SDSE causing infections in humans. The distinction between group C and G isolates reflects recent evolution, and no long-term genetic isolation between them was found. Lateral gene transfer and recombination involving housekeeping genes and the emm gene are important mechanisms driving genetic variability in the SDSE population.

Indexed as

HumansPhylogenyRecombination, GeneticStreptococcus

Identifiers

PMID20668530
PMCPMC2909212
OpenAlexW2088377752

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.