Evidence map›Paper›PMID 29310695›Full record

ArticleParasites & vectors2018

Understanding the relationship between egg- and antigen-based diagnostics of Schistosoma mansoni infection pre- and post-treatment in Uganda.

Joaquín M Prada, Panayiota Touloupou, Moses Adriko, Edridah M Tukahebwa, Poppy H L Lamberton, T Déirdre Hollingsworth

Abstract readComparative StudyEvaluation Study
In one paragraph

Article in Parasites & vectors, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. How Does Treatment Coverage and Proportion Never Treated Influence the Success of Schistosoma mansoni Elimination as a Public Health Problem by 2030?Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024
    Article
  7. Reproducibility matters: intra- and inter-sample variation of the point-of-care circulating cathodic antigen test in twoPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  8. Article
  9. Modelling morbidity for neglected tropical diseases: the long and winding road from cumulative exposure to long-term pathology.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Review
  10. Article
  11. Article
  12. Reconciling Egg- and Antigen-Based Estimates of Schistosoma mansoni Clearance and Reinfection: A Modeling Study.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
  13. Translating From Egg- to Antigen-Based Indicators forFrontiers in tropical diseases · 2022
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Nationwide Remapping ofThe American journal of tropical medicine and hygiene · 2020
    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

6 authors.

Joaquín M PradaDepartment of Mathematics, University of Warwick, Coventry, UK. j.prada@surrey.ac.uk.
Panayiota TouloupouDepartment of Statistics, University of Warwick, Coventry, UK.
Moses AdrikoVector Control Division, Ministry of Health, Uganda, Kampala, Uganda.
Edridah M TukahebwaVector Control Division, Ministry of Health, Uganda, Kampala, Uganda.
Poppy H L LambertonInstitute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow, UK.
T Déirdre HollingsworthDepartment of Mathematics, University of Warwick, Coventry, UK.

Funding

Bill and Melinda Gates Foundation NTD modelling consortiumEuropean Research Council 680088 SCHISTO_PERSISTMedical Research Council MR/P025447/1Medical Research Council (GB) MR/P025447/1
6 · The paper itself

Abstract

backgroundSchistosomiasis is a major socio-economic and public health problem in many sub-Saharan African countries. After large mass drug administration (MDA) campaigns, prevalence of infection rapidly returns to pre-treatment levels. The traditional egg-based diagnostic for schistosome infections, Kato-Katz, is being substituted in many settings by circulating antigen recognition-based diagnostics, usually the point-of-care circulating cathodic antigen test (CCA). The relationship between these diagnostics is poorly understood, particularly after treatment in both drug-efficacy studies and routine monitoring.

resultsWe created a model of schistosome infections to better understand and quantify the relationship between these two egg- and adult worm antigen-based diagnostics. We focused particularly on the interpretation of "trace" results after CCA testing. Our analyses suggest that CCA is generally a better predictor of prevalence, particularly after treatment, and that trace CCA results are typically associated with truly infected individuals.

conclusionsEven though prevalence rises to pre-treatment levels only six months after MDAs, our model suggests that the average intensity of infection is much lower, and is probably in part due to a small burden of surviving juveniles from when the treatment occurred. This work helps to better understand CCA diagnostics and the interpretation of post-treatment prevalence estimations.

Indexed as

AnimalsDiagnostic Tests, RoutineHumansImmunoassayMicrobiological TechniquesSchistosoma mansoniSchistosomiasis mansoniUgandaCCADiagnosticsKato-KatzMathematical modelsSchistosomesTrace readings

Identifiers

PMID29310695
PMCPMC5759883

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.