Evidence map›Paper›PMID 34671035›Full record

ArticleNature communications2021

Population structure, biogeography and transmissibility of Mycobacterium tuberculosis.

Luca Freschi, Roger Vargas, Ashaque Husain, S M Mostofa Kamal, Alena Skrahina, Sabira Tahseen, Nazir Ismail, Anna Barbova, Stefan Niemann, Daniela Maria Cirillo and 3 more

Abstract read
In one paragraph

Article in Nature communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
86citing 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

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

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Extensive Endemic Transmission of Multidrug-ResistantOpen forum infectious diseases · 2026
    Article
  11. Article
  12. Genomic characterization of drug-resistantFrontiers in tuberculosis · 2026
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Genomic landscape ofNew microbes and new infections · 2025
    Article
  18. Article
  19. Article
  20. Article

26 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

13 authors.

Luca FreschiDepartment of Biomedical Informatics, Harvard Medical School, Boston, MA, USA. l.freschi@gmail.com.
Roger VargasDepartment of Biomedical Informatics, Harvard Medical School, Boston, MA, USA.ORCID 0000-0002-7116-5211
Ashaque HusainDirectorate General of Health Services, Ministry of Health and Family Welfare, Dhaka, Bangladesh.ORCID 0000-0002-2123-9016
S M Mostofa KamalDepartment of Pathology and Microbiology, National Institute of Diseases of the Chest and Hospital, Dhaka, Bangladesh.
Alena SkrahinaRepublican Scientific and Practical Centre for Pulmonology and Tuberculosis, Minsk, Belarus.
Sabira TahseenNational Reference Laboratory, National Tuberculosis Control Programme, Islamabad, Pakistan.ORCID 0000-0002-6887-8149
Nazir IsmailNational Institute for Communicable Diseases, Sandringham, South Africa.
Anna BarbovaCentral Reference Laboratory on Tuberculosis Microbiological Diagnostics, Ministry of Health, Kiev, Ukraine.
Stefan NiemannMolecular and Experimental Mycobacteriology, Borstel Research Centre, Borstel, Germany.
Daniela Maria CirilloEmerging Bacterial Pathogens Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.ORCID 0000-0001-6415-1535
Anna S DeanGlobal Tuberculosis Programme, World Health Organization, Geneva, Switzerland.ORCID 0000-0002-9539-7164
Matteo ZignolGlobal Tuberculosis Programme, World Health Organization, Geneva, Switzerland.
Maha Reda FarhatDepartment of Biomedical Informatics, Harvard Medical School, Boston, MA, USA. maha_farhat@hms.harvard.edu.ORCID 0000-0002-3871-5760

Funding

World Health Organization 001
6 · The paper itself

Abstract

Mycobacterium tuberculosis is a clonal pathogen proposed to have co-evolved with its human host for millennia, yet our understanding of its genomic diversity and biogeography remains incomplete. Here we use a combination of phylogenetics and dimensionality reduction to reevaluate the population structure of M. tuberculosis, providing an in-depth analysis of the ancient Indo-Oceanic Lineage 1 and the modern Central Asian Lineage 3, and expanding our understanding of Lineages 2 and 4. We assess sub-lineages using genomic sequences from 4939 pan-susceptible strains, and find 30 new genetically distinct clades that we validate in a dataset of 4645 independent isolates. We find a consistent geographically restricted or unrestricted pattern for 20 groups, including three groups of Lineage 1. The distribution of terminal branch lengths across the M. tuberculosis phylogeny supports the hypothesis of a higher transmissibility of Lineages 2 and 4, in comparison with Lineages 3 and 1, on a global scale. We define an expanded barcode of 95 single nucleotide substitutions that allows rapid identification of 69 M. tuberculosis sub-lineages and 26 additional internal groups. Our results paint a higher resolution picture of the M. tuberculosis phylogeny and biogeography.

Indexed as

PhylogenyDNA Barcoding, TaxonomicEvolution, MolecularGenome, BacterialHumansMycobacterium tuberculosisPhylogeographyPolymorphism, Single NucleotideSoftwareTuberculosis

Identifiers

PMID34671035
PMCPMC8528816

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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.