Evidence map›Paper›PMID 27849586›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Origins of the current seventh cholera pandemic.

Dalong Hu, Bin Liu, Lu Feng, Peng Ding, Xi Guo, Min Wang, Boyang Cao, Peter R Reeves, Lei Wang

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed, 2 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

109 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Long-Term Kinetics of Serological Antibodies againstInternational journal of environmental research and public health · 2022
    Pooled it
  3. Article
  4. Article
  5. Article
  6. Atypical El TorMicrobiology spectrum · 2026
    Article
  7. Article
  8. Article
  9. The BaeS/BaeR two-component system enhancesFrontiers in cellular and infection microbiology · 2026
    Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Defence systems encoded by core genomic islands of seventh pandemicPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  15. Lineage-specific defence systems of pandemicPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  16. Article
  17. Article
  18. Allelic variations and gene cluster modularity act as nonlinear bottlenecks for cholera emergence.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  19. Cholera in Africa: A Climate Change Crisis.Journal of epidemiology and global health · 2025
    Review
  20. Deployment of amBio · 2025
    Article

49 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

9 authors.

Dalong HuTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Bin LiuTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Lu FengTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Peng DingTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Xi GuoTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Min WangTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Boyang CaoTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China.
Peter R ReevesSchool of Life and Environmental Sciences, University of Sydney, Sydney, NSW 2006, Australia; wanglei@nankai.edu.cn peter.reeves@sydney.edu.au.
Lei WangTEDA Institute of Biological Sciences and Biotechnology, Nankai University, Tianjin Economic-Technological Development Area, Tianjin 300457, People's Republic of China; wanglei@nankai.edu.cn peter.reeves@sydney.edu.au.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vibrio cholerae has caused seven cholera pandemics since 1817, imposing terror on much of the world, but bacterial strains are currently only available for the sixth and seventh pandemics. The El Tor biotype seventh pandemic began in 1961 in Indonesia, but did not originate directly from the classical biotype sixth-pandemic strain. Previous studies focused mainly on the spread of the seventh pandemic after 1970. Here, we analyze in unprecedented detail the origin, evolution, and transition to pandemicity of the seventh-pandemic strain. We used high-resolution comparative genomic analysis of strains collected from 1930 to 1964, covering the evolution from the first available El Tor biotype strain to the start of the seventh pandemic. We define six stages leading to the pandemic strain and reveal all key events. The seventh pandemic originated from a nonpathogenic strain in the Middle East, first observed in 1897. It subsequently underwent explosive diversification, including the spawning of the pandemic lineage. This rapid diversification suggests that, when first observed, the strain had only recently arrived in the Middle East, possibly from the Asian homeland of cholera. The lineage migrated to Makassar, Indonesia, where it gained the important virulence-associated elements Vibrio seventh pandemic island I (VSP-I), VSP-II, and El Tor type cholera toxin prophage by 1954, and it then became pandemic in 1961 after only 12 additional mutations. Our data indicate that specific niches in the Middle East and Makassar were important in generating the pandemic strain by providing gene sources and the driving forces for genetic events.

Indexed as

PandemicsCholeraEvolution, MolecularGenome, BacterialHumansMolecular Sequence AnnotationPhylogenyPolymorphism, Single NucleotideVibrio choleraecomparative genomicsevolutionpandemicVibrio cholerae

Identifiers

PMID27849586
PMCPMC5137724

What OpenQuestion holds

Textmetadata
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.