Evidence map›Paper›PMID 31200890›Full record

SynthesisThe Lancet. Global health2019

Mapping the global distribution of Buruli ulcer: a systematic review with evidence consensus.

Hope Simpson, Kebede Deribe, Earnest Njih Tabah, Adebayo Peters, Issaka Maman, Michael Frimpong, Edwin Ampadu, Richard Phillips, Paul Saunderson, Rachel L Pullan and 1 more

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in The Lancet. Global health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
7.3field-weighted citation impact, top 2% 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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 72 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Review
  5. Article
  6. Spatiotemporal distribution ofEmerging microbes & infections · 2025
    Article
  7. Article
  8. Repurposing drugs to advance the treatment of Buruli ulcer.Antimicrobial agents and chemotherapy · 2025
    Article
  9. Article
  10. Article
  11. Article
  12. Systematic review: Global host range, case fatality and detection rates ofJournal of clinical tuberculosis and other mycobacterial diseases · 2024
    Review
  13. Nontuberculous mycobacterial infection in Wisconsin children and adolescents.Journal of clinical tuberculosis and other mycobacterial diseases · 2024
    Article
  14. Clinical and microbiological predictors of healing in Buruli ulcer disease.Journal of clinical tuberculosis and other mycobacterial diseases · 2024
    Article
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 6 institutions in 4 countries.

Hope SimpsonDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK. Electronic address: hope.simpson@lshtm.ac.uk.
Kebede DeribeWellcome Trust Brighton and Sussex Centre for Global Health Research, Brighton and Sussex Medical School, Brighton, UK.
Earnest Njih TabahNational Yaws, Leishmaniasis, Leprosy and Buruli Ulcer Control Programme, Yaoundé, Cameroon.
Adebayo PetersThe National Tuberculosis, Leprosy and Buruli Ulcer Control Programme, Abuja, Nigeria.
Issaka MamanNational Reference Laboratory for Buruli ulcer disease in Togo, Ecole Supérieure des Techniques Biologiques et Alimentaires (ESTBA), Laboratoire des Sciences Biologiques et des Substances Bioactives, Université de Lomé, Lomé, Togo.
Michael FrimpongNational Buruli Ulcer Control Program, Ghana Health Service, Accra, Ghana.
Edwin AmpaduSchool of Medical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
Richard PhillipsNational Buruli Ulcer Control Program, Ghana Health Service, Accra, Ghana.
Paul SaundersonAmerican Leprosy Missions, Greenville, SC, USA.
Rachel L PullanDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
Jorge CanoDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, UK.
London School of Hygiene & Tropical Medicine · GBGhana Health Service · GHAmerican Leprosy Missions · USBrighton and Sussex Medical School · GBKwame Nkrumah University of Science and Technology · GHUniversity of Lomé · TG

Funding

Medical Research Council MR/J01477X/1Wellcome Trust 201900Wellcome Trust 201900/Z/16/Z
6 · The paper itself

Abstract

backgroundBuruli ulcer can cause disfigurement and long-term loss of function. It is underdiagnosed and under-reported, and its current distribution is unclear. We aimed to synthesise and evaluate data on Buruli ulcer prevalence and distribution.

methodsWe did a systematic review of Buruli ulcer prevalence and used an evidence consensus framework to describe and evaluate evidence for Buruli ulcer distribution worldwide. We searched PubMed and Web of Science databases from inception to Aug 6, 2018, for records of Buruli ulcer and Mycobacterium ulcerans detection, with no limits on study type, publication date, participant population, or location. English, French, and Spanish language publications were included. We included population-based surveys presenting Buruli ulcer prevalence estimates, or data that allowed prevalence to be estimated, in the systematic review. We extracted geographical data on the occurrence of Buruli ulcer cases and M ulcerans detection from studies of any type for the evidence consensus framework; articles that did not report original data were excluded. For the main analysis, we extracted prevalence estimates from included surveys and calculated 95% CIs using Byar's method. We included occurrence records, reports to WHO and the Global Infectious Diseases and Epidemiology Network, and surveillance data from Buruli ulcer control programmes in the evidence consensus framework to grade the strength of evidence for Buruli ulcer endemicity. This study is registered with PROSPERO, number CRD42018116260.

findings2763 titles met the search criteria. We extracted prevalence estimates from ten studies and occurrence data from 208 studies and five unpublished surveillance datasets. Prevalence estimates within study areas ranged from 3·2 (95% CI 3·1-3·3) cases per 10 000 population in Côte d'Ivoire to 26·9 (23·5-30·7) cases per 10 000 population in Benin. There was evidence of Buruli ulcer in 32 countries and consensus on presence in 12.

interpretationThe global distribution of Buruli ulcer is uncertain and potentially wider than currently recognised. Our findings represent the strongest available evidence on Buruli ulcer distribution so far and have many potential applications, from directing surveillance activities to informing burden estimates.

fundingAIM Initiative.

Indexed as

Buruli UlcerGeographic MappingConsensus Statements as TopicGlobal HealthHumansMycobacterium ulceransPrevalence

Identifiers

PMID31200890
PMCPMC6614043
OpenAlexW2950212024

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.