Evidence map›Paper›PMID 17287725›Full record

ArticleNature2007

An African origin for the intimate association between humans and Helicobacter pylori.

Bodo Linz, François Balloux, Yoshan Moodley, Andrea Manica, Hua Liu, Philippe Roumagnac, Daniel Falush, Christiana Stamer, Franck Prugnolle, Schalk W van der Merwe and 6 more

Open access · bronzeAbstract readHistorical Article
In one paragraph

Article in Nature, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 450 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
450citing papers in PubMed, 1 pooled it
71.4field-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

450 citing papers in PubMed, 1 synthesis or guideline pooled it, 977 citations in OpenAlex.

  1. Guideline
  2. Ten-day concomitant and sequential therapy for Helicobacter pylori effective in region with high antibiotic resistance rates.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2022
    Trial
  3. Trial
  4. Trial
  5. Host andGut microbes · 2026
    Article
  6. Article
  7. Article
  8. Microbiology and molecular biology reviews : MMBR · 2026
    Review
  9. Article
  10. Molecular Characterization and Genetic Diversity ofDiagnostics (Basel, Switzerland) · 2026
    Article
  11. Article
  12. Article
  13. Genomic-microbial coevolution in human development: chromosome 2 fusion, and human accelerated regions.Mammalian genome : official journal of the International Mammalian Genome Society · 2026
    Review
  14. Article
  15. Article
  16. Article
  17. International journal of molecular sciences · 2025
    Review
  18. Article
  19. Characteristics of Gastric Endoscopic and Histopathological Findings in the South and Southeast Asian Populations.JGH open : an open access journal of gastroenterology and hepatology · 2025
    Article
  20. Global diversity of integrating conjugative elements (ICEs) inbioRxiv : the preprint server for biology · 2025
    Article

390 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

16 authors at 4 institutions in 3 countries.

Bodo Linz *Department of Molecular Biology, Max-Planck Institut für Infektionsbiologie, D-10117 Berlin, Germany.
François Balloux *Theoretical and Molecular Population Genetics Group, Department of Genetics, University of Cambridge, Downing Street, Cambridge CB2 3EH, UK.
Yoshan MoodleyDepartment of Molecular Biology, Max-Planck Institut für Infektionsbiologie, D-10117 Berlin, Germany.
Andrea ManicaEvolutionary Ecology Group, Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK.
Hua LiuTheoretical and Molecular Population Genetics Group, Department of Genetics, University of Cambridge, Downing Street, Cambridge CB2 3EH, UK.
Philippe RoumagnacDepartment of Molecular Biology, Max-Planck Institut für Infektionsbiologie, D-10117 Berlin, Germany.
Daniel FalushDepartment of Statistics, University of Oxford, Oxford OX1 3SY, UK.
Christiana StamerDepartment of Molecular Biology, Max-Planck Institut für Infektionsbiologie, D-10117 Berlin, Germany.
Franck PrugnolleGénétique et Evolution des Maladies Infectieuses, UMR IRD-CNRS 2724, centre IRD de Montpellier, 911 Av. Agropolis, BP 64501, 34394 Montpellier Cedex 05, France.
Schalk W van der MerweDepartment of Internal Medicine and Gastroenterology, University of Pretoria, South Africa.
Yoshio YamaokaDepartment of Medicine-Gastroenterology, Baylor College of Medicine and Michael E. DeBakey VA Medical Center, Houston, TX 77030, U.S.A.
David Y GrahamDepartment of Medicine-Gastroenterology, Baylor College of Medicine and Michael E. DeBakey VA Medical Center, Houston, TX 77030, U.S.A.
Emilio Perez-TralleroDepartment of Microbiology, Donostia Hospital, 20014 San Sebastian, Spain.
Torkel WadstromDepartment of Laboratory Medicine, Lund University, SE22632 Lund, Sweden.
Sebastian SuerbaumMedizinische Hochschule Hannover, Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany.
Mark AchtmanDepartment of Molecular Biology, Max-Planck Institut für Infektionsbiologie, D-10117 Berlin, Germany.
Max Planck Institute for Infection Biology · DEUniversity of Cambridge · GBUniversity of Oxford · GBUniversity of Pretoria · ZA

Funding

Biotechnology and Biological Sciences Research Council BB/C007123/1Wellcome Trust 069662
6 · The paper itself

Abstract

Infection of the stomach by Helicobacter pylori is ubiquitous among humans. However, although H. pylori strains from different geographic areas are associated with clear phylogeographic differentiation, the age of an association between these bacteria with humans remains highly controversial. Here we show, using sequences from a large data set of bacterial strains that, as in humans, genetic diversity in H. pylori decreases with geographic distance from east Africa, the cradle of modern humans. We also observe similar clines of genetic isolation by distance (IBD) for both H. pylori and its human host at a worldwide scale. Like humans, simulations indicate that H. pylori seems to have spread from east Africa around 58,000 yr ago. Even at more restricted geographic scales, where IBD tends to become blurred, principal component clines in H. pylori from Europe strongly resemble the classical clines for Europeans described by Cavalli-Sforza and colleagues. Taken together, our results establish that anatomically modern humans were already infected by H. pylori before their migrations from Africa and demonstrate that H. pylori has remained intimately associated with their human host populations ever since.

Indexed as

Emigration and ImmigrationPhylogenyAfricaAsiaEuropeGenetic VariationGeographyHelicobacter InfectionsHelicobacter pyloriHistory, AncientHumansMolecular EpidemiologyMolecular Sequence Data

Identifiers

PMID17287725
PMCPMC1847463
OpenAlexW2108018752

What OpenQuestion holds

Textmetadata
LicenceTDM
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.