Evidence map›Paper›PMID 34819643›Full record

ArticleNature microbiology2021

Global phylogeny of Treponema pallidum lineages reveals recent expansion and spread of contemporary syphilis.

Mathew A Beale, Michael Marks, Michelle J Cole, Min-Kuang Lee, Rachel Pitt, Christopher Ruis, Eszter Balla, Tania Crucitti, Michael Ewens, Candela Fernández-Naval and 28 more

Open access · hybridAbstract read
In one paragraph

Article in Nature microbiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
11.9field-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

71 citing papers in PubMed, 131 citations in OpenAlex.

  1. Article
  2. Putative mechanisms of ocular inflammation in syphilis.Journal of ophthalmic inflammation and infection · 2026
    Review
  3. The Global Syphilis Epidemic: Turning the Tide.Sexually transmitted diseases · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Formal description ofInternational journal of systematic and evolutionary microbiology · 2026
    Article
  8. Article
  9. Lineage-specificbioRxiv : the preprint server for biology · 2026
    Article
  10. TheJornal brasileiro de doencas sexualmente transmissiveis : DST · 2026
    Article
  11. Article
  12. Frontiers in immunology · 2026
    Review
  13. Article
  14. Article
  15. Article
  16. Complete genome sequences of twoMicrobiology resource announcements · 2025
    Article
  17. Analysis ofmSphere · 2025
    Article
  18. Article
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

38 authors at 20 institutions in 11 countries.

Mathew A BealeParasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, UK. mathew.beale@sanger.ac.uk.ORCID http://orcid.org/0000-0002-4740-3187
Michael MarksFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.ORCID http://orcid.org/0000-0002-7585-4743
Michelle J ColeHCAI, Fungal, AMR, AMU and Sepsis Division, UK Health Security Agency, London, UK.
Min-Kuang LeeBritish Columbia Centre for Disease Control, Public Health Laboratory, Vancouver, British Columbia, Canada.ORCID http://orcid.org/0000-0002-0205-9482
Rachel PittHCAI, Fungal, AMR, AMU and Sepsis Division, UK Health Security Agency, London, UK.
Christopher RuisMolecular Immunity Unit, MRC-Laboratory of Molecular Biology, Department of Medicine, University of Cambridge, Cambridge, UK.ORCID http://orcid.org/0000-0003-0977-5534
Eszter BallaBacterial STIs Reference Laboratory, Department of Bacteriology, National Public Health Centre, Budapest, Hungary.ORCID http://orcid.org/0000-0001-8519-9511
Tania CrucittiDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerpen, Belgium.
Michael EwensBrotherton Wing Clinic, Brotherton Wing, Leeds General Infirmary, Leeds, UK.
Candela Fernández-NavalMicrobiology Department, Vall d'Hebron Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain.ORCID http://orcid.org/0000-0002-5584-3537
Anna GrankvistNational Reference Laboratory for STIs, Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Malcolm GuiverLaboratory Network, Manchester, UK Health Security Agency, Manchester Royal Infirmary, Manchester, UK.
Chris R KenyonDepartment of Clinical Sciences, Institute of Tropical Medicine, Antwerpen, Belgium.
Rafil KhairullinInstitute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.ORCID http://orcid.org/0000-0001-9879-378X
Ranmini KularatneCentre for HIV and STI, National Institute for Communicable Diseases, Johannesburg, South Africa.
Maider ArandoSTI Unit Vall d'Hebron-Drassanes, Infectious Diseases Department, Hospital Vall d'Hebron, Barcelona, Spain.
Barbara J MoliniDepartment of Medicine, University of Washington, Seattle, WA, USA.
Andrey ObukhovTuvan Republican Skin and Venereal Diseases Dispensary, Ministry of Health of Tuva Republic, Kyzyl, Russia.ORCID http://orcid.org/0000-0001-6320-9651
Emma E PageVirology Department, Old Medical School, Leeds Teaching Hospitals Trust, Leeds, UK.
Fruzsina PetrovayBacterial STIs Reference Laboratory, Department of Bacteriology, National Public Health Centre, Budapest, Hungary.
Cornelis RietmeijerColorado School of Public Health, University of Colorado, Denver, CO, USA.
Dominic RowleyMidlands Regional Hospital Portlaoise, Laois, Ireland.
Sandy ShokoplesAlberta Precision Laboratories, Edmonton, Alberta, Canada.
Erasmus SmitClinical Microbiology Department, Queen Elizabeth Hospital, Birmingham, UK.ORCID http://orcid.org/0000-0003-3286-798X
Emma L SweeneyThe University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
George TaiaroaDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Jaime H VeraDepartment of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, Brighton, UK.ORCID http://orcid.org/0000-0002-1165-0573
Christine WenneråsNational Reference Laboratory for STIs, Department of Clinical Microbiology, Sahlgrenska University Hospital, Gothenburg, Sweden.
David M WhileyThe University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Queensland, Australia.
Deborah A WilliamsonDepartment of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.ORCID http://orcid.org/0000-0001-7363-6665
Gwenda HughesDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Prenilla NaiduAlberta Precision Laboratories, Edmonton, Alberta, Canada.ORCID http://orcid.org/0000-0002-7028-098X
Magnus UnemoWHO Collaborating Centre for Gonorrhoea and other Sexually Transmitted Infections, National Reference Laboratory for STIs, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Mel KrajdenBritish Columbia Centre for Disease Control, Public Health Laboratory, Vancouver, British Columbia, Canada.
Sheila A LukehartDepartments of Medicine/Infectious Diseases and Global Health, University of Washington, Seattle, WA, USA.ORCID http://orcid.org/0000-0001-9778-3301
Muhammad G MorshedBritish Columbia Centre for Disease Control, Public Health Laboratory, Vancouver, British Columbia, Canada.
Helen FiferBlood Safety, Hepatitis, STI and HIV Division, UK Health Security Agency, London, UK.
Nicholas R ThomsonParasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, UK. nrt@sanger.ac.uk.ORCID http://orcid.org/0000-0002-4432-8505
UK Health Security Agency · GBInstituut voor Tropische Geneeskunde · BENational Public Health and Medical Officer Service · HUPeter Doherty Institute · AUSahlgrenska University Hospital · SEThe University of Queensland · AUUniversity of British Columbia · CAUniversity of Washington · USWellcome Sanger Institute · GBAlberta Hospital Edmonton · CABC Centre for Disease Control · CABrighton and Sussex Medical School · GBColorado School of Public Health · USKazan Federal University · RULeeds General Infirmary · GBLeeds Teaching Hospitals NHS Trust · GBLondon School of Hygiene & Tropical Medicine · GBManchester Royal Infirmary · GBMidland Regional Hospital Portlaoise · IEMRC Laboratory of Molecular Biology · GB

Funding

TREPONEMA PALLIDUM PATHOGENESIS ASSOCIATED MOLECULESR01AI042143 · NIAID · UNIVERSITY OF WASHINGTON · PI LUKEHART, SHEILA A. · 1998 to 2015
$5.4M
Innovative approaches to syphilis vaccine designR01AI123196 · NIAID · UNIVERSITY OF WASHINGTON · PI CAMERON, CAROLINE E, LUKEHART, SHEILA A. · 2016 to 2019
$2.3M
Medical Research Council MR/V027956/1NIAID NIH HHS R01 AI042143NIAID NIH HHS R01 AI123196Wellcome Trust 206194
6 · The paper itself

Abstract

Syphilis, which is caused by the sexually transmitted bacterium Treponema pallidum subsp. pallidum, has an estimated 6.3 million cases worldwide per annum. In the past ten years, the incidence of syphilis has increased by more than 150% in some high-income countries, but the evolution and epidemiology of the epidemic are poorly understood. To characterize the global population structure of T. pallidum, we assembled a geographically and temporally diverse collection of 726 genomes from 626 clinical and 100 laboratory samples collected in 23 countries. We applied phylogenetic analyses and clustering, and found that the global syphilis population comprises just two deeply branching lineages, Nichols and SS14. Both lineages are currently circulating in 12 of the 23 countries sampled. We subdivided T. p. pallidum into 17 distinct sublineages to provide further phylodynamic resolution. Importantly, two Nichols sublineages have expanded clonally across 9 countries contemporaneously with SS14. Moreover, pairwise genome analyses revealed examples of isolates collected within the last 20 years from 14 different countries that had genetically identical core genomes, which might indicate frequent exchange through international transmission. It is striking that most samples collected before 1983 are phylogenetically distinct from more recently isolated sublineages. Using Bayesian temporal analysis, we detected a population bottleneck occurring during the late 1990s, followed by rapid population expansion in the 2000s that was driven by the dominant T. pallidum sublineages circulating today. This expansion may be linked to changing epidemiology, immune evasion or fitness under antimicrobial selection pressure, since many of the contemporary syphilis lineages we have characterized are resistant to macrolides.

Indexed as

PhylogenyAnti-Bacterial AgentsDrug Resistance, BacterialGenome, BacterialHumansMacrolidesSyphilisTreponema pallidumAnti-Bacterial AgentsMacrolides

Identifiers

PMID34819643
PMCPMC8612932
OpenAlexW3215251541

What OpenQuestion holds

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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.