Evidence map›Paper›PMID 34033646›Full record

ArticlePLoS neglected tropical diseases2021

Associations between infection intensity categories and morbidity prevalence in school-age children are much stronger for Schistosoma haematobium than for S. mansoni.

Ryan E Wiegand, W Evan Secor, Fiona M Fleming, Michael D French, Charles H King, Arminder K Deol, Susan P Montgomery, Darin Evans, Jürg Utzinger, Penelope Vounatsou and 1 more

Abstract readComparative Study
In one paragraph

Article in PLoS neglected tropical diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing 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

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

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. The short-term impact ofProceedings. Biological sciences · 2024
    Article
  15. Article
  16. Review
  17. Article
  18. 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
  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

11 authors.

Ryan E WiegandDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.ORCID 0000-0002-9486-1850
W Evan SecorDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.ORCID 0000-0003-0584-5961
Fiona M FlemingSCI Foundation, London, United Kingdom.ORCID 0000-0002-3866-2232
Michael D FrenchRTI International, Washington DC, United States of America.ORCID 0000-0002-9886-9980
Charles H KingCenter for Global Health and Diseases, Case Western Reserve University, Cleveland, Ohio, United States of America.ORCID 0000-0001-8349-9270
Arminder K DeolDepartment of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, United Kingdom.ORCID 0000-0002-7154-5505
Susan P MontgomeryDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Darin EvansUnited States Agency for International Development, Washington DC, United States of America.ORCID 0000-0003-1180-8980
Jürg UtzingerSwiss Tropical and Public Health Institute, Basel, Switzerland.
Penelope VounatsouSwiss Tropical and Public Health Institute, Basel, Switzerland.
Sake J de VlasDepartment of Public Health, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.ORCID 0000-0002-1830-5668

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWorld Health Organization (WHO) guidelines for measuring global progress in schistosomiasis control classify individuals with Schistosoma spp. infections based on the concentration of excreted eggs. We assessed the associations between WHO infection intensity categories and morbidity prevalence for selected S. haematobium and S. mansoni morbidities in school-age children. METHODOLOGY: A total of 22,488 children aged 6-15 years from monitoring and evaluation cohorts in Burkina Faso, Mali, Niger, Uganda, Tanzania, and Zambia from 2003-2008 were analyzed using Bayesian logistic regression. Models were utilized to evaluate associations between intensity categories and the prevalence of any urinary bladder lesion, any upper urinary tract lesion, microhematuria, and pain while urinating (for S. haematobium) and irregular hepatic ultrasound image pattern (C-F), enlarged portal vein, laboratory-confirmed diarrhea, and self-reported diarrhea (for S. mansoni) across participants with infection and morbidity data. PRINCIPAL

findingsS. haematobium infection intensity categories possessed consistent morbidity prevalence across surveys for multiple morbidities and participants with light infections had elevated morbidity levels, compared to negative participants. Conversely, S. mansoni infection intensity categories lacked association with prevalence of the morbidity measures assessed. CONCLUSIONS/SIGNIFICANCE: Current status infection intensity categories for S. haematobium were associated with morbidity levels in school-age children, suggesting urogenital schistosomiasis morbidity can be predicted by an individual's intensity category. Conversely, S. mansoni infection intensity categories were not consistently indicative of childhood morbidity at baseline or during the first two years of a preventive chemotherapy control program.

Indexed as

AdolescentAfrica South of the SaharaAnimalsChemopreventionChildDiarrheaFemaleHumansLiverMaleMorbidityParasite Egg CountSchistosoma haematobiumSchistosoma mansoniSchistosomiasis haematobiaSchistosomiasis mansoni

Identifiers

PMID34033646
PMCPMC8183985

What OpenQuestion holds

Textmetadata
LicenceCC0
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.