Evidence map›Paper›PMID 29118442›Full record

ArticleScientific reports2017

Serology reflects a decline in the prevalence of trachoma in two regions of The Gambia.

Stephanie J Migchelsen, Nuno Sepúlveda, Diana L Martin, Gretchen Cooley, Sarah Gwyn, Harry Pickering, Hassan Joof, Pateh Makalo, Robin Bailey, Sarah E Burr and 3 more

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

23 citing papers in PubMed, 31 citations in OpenAlex.

  1. Trial
  2. Data Resource Profile: Global Trachoma Serology Data Repository.International journal of epidemiology · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. The simplified trachoma grading system, amended.Bulletin of the World Health Organization · 2020
    Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
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 at 4 institutions in 4 countries.

Stephanie J MigchelsenClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom. stephanie.migchelsen@lshtm.ac.uk.ORCID 0000-0003-2049-9040
Nuno SepúlvedaClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Diana L MartinDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Gretchen CooleyDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Sarah GwynIHRC, Inc., Centers for Disease Control and Prevention, Atlanta, Georgia, USA.
Harry PickeringClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Hassan JoofDisease Control and Elimination Theme, Medical Research Council, The Gambia Unit, Fajara, The Gambia.
Pateh MakaloDisease Control and Elimination Theme, Medical Research Council, The Gambia Unit, Fajara, The Gambia.
Robin BaileyClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Sarah E BurrClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
David C W MabeyClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Anthony W SolomonClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Chrissy H RobertsClinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom.ORCID 0000-0003-1064-5980
London School of Hygiene & Tropical Medicine · GBCenters for Disease Control and Prevention · USMRC Unit the Gambia · GMUniversity of Lisbon · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trachoma is caused by Chlamydia trachomatis (Ct). It is targeted for global elimination as a public health problem. In 2014, a population-based cross-sectional study was performed in two previously trachoma-endemic areas of The Gambia. Participants of all ages from Lower River Region (LRR) (N = 1028) and Upper River Region (URR) (N = 840) underwent examination for trachoma and had blood collected for detection of antibodies against the Ct antigen Pgp3, by ELISA. Overall, 30 (1.6%) individuals had active trachoma; the prevalence in children aged 1-9 years was 3.4% (25/742) with no statistically significant difference in prevalence between the regions. There was a significant difference in overall seroprevalence by region: 26.2% in LRR and 17.1% in URR (p < 0.0001). In children 1-9 years old, seroprevalence was 4.4% in LRR and 3.9% in URR. Reversible catalytic models using information on age-specific seroprevalence demonstrated a decrease in the transmission of Ct infection in both regions, possibly reflecting the impact of improved access to water, health and sanitation as well as mass drug administration campaigns. Serological testing for antibodies to Ct antigens is potentially useful for trachoma programmes, but consideration should be given to the co-endemicity of sexually transmitted Ct infections.

Indexed as

AdolescentAdultAnti-Bacterial AgentsAntibodies, BacterialAntigens, BacterialChildChild, PreschoolChlamydia trachomatisCross-Sectional StudiesFemaleGambiaHealth SurveysHumansInfantMalePrevalenceAnti-Bacterial AgentsAntibodies, BacterialAntigens, Bacterial

Identifiers

PMID29118442
PMCPMC5678181
OpenAlexW2950453596

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.