Evidence map›Paper›PMID 28968877›Full record

Trial reportThe Journal of infectious diseases2017

A Persistent Hotspot of Schistosoma mansoni Infection in a Five-Year Randomized Trial of Praziquantel Preventative Chemotherapy Strategies.

Ryan E Wiegand, Pauline N M Mwinzi, Susan P Montgomery, YuYen L Chan, Kennedy Andiego, Martin Omedo, Geoffrey Muchiri, Michael O Ogutu, Fredrick Rawago, Maurice R Odiere and 2 more

Erratum issuedOpen access · hybridAbstract readRandomized Controlled Trial
In one paragraph

Trial report in The Journal of infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 67 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 2 pooled it
7.5field-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

67 citing papers in PubMed, 2 syntheses or guidelines pooled it, 93 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Effectiveness of Four Different Interventions Against Schistosoma haematobium in a Seasonal Transmission Setting of Côte d'Ivoire: A Cluster Randomized Trial.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Trial
  4. Trial
  5. Trial
  6. Fine-scale heterogeneity inProceedings of the National Academy of Sciences of the United States of America · 2020
    Trial
  7. SCORE Operational Research on Moving toward Interruption of Schistosomiasis Transmission.The American journal of tropical medicine and hygiene · 2020
    Trial
  8. Trial
  9. Trial
  10. Trial
  11. Five-Year Impact of Different Multi-Year Mass Drug Administration Strategies on ChildhoodThe American journal of tropical medicine and hygiene · 2019
    Trial
  12. Trial
  13. Trial
  14. Article
  15. Article
  16. Direct measurement ofbioRxiv : the preprint server for biology · 2026
    Article
  17. Article
  18. Article
  19. Long-term persistence ofCurrent research in parasitology & vector-borne diseases · 2026
    Article
  20. Review

7 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 4 institutions in 2 countries.

Ryan E WiegandDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia.
Pauline N M MwinziCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Susan P MontgomeryDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia.
YuYen L ChanEmory University, Atlanta, Georgia.
Kennedy AndiegoCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Martin OmedoCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Geoffrey MuchiriCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Michael O OgutuCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Fredrick RawagoCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Maurice R OdiereCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
Diana M S KaranjaCenter for Global Health Research, Kenya Medical Research Institute, Kisumu.
W Evan SecorDivision of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia.
Kenya Medical Research Institute · KECenters for Disease Control and Prevention · USDivision of Parasitic Diseases and Malaria · USEmory University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Persistent hotspots have been described after mass drug administration (MDA) for the control of schistosomiasis, but they have not been studied during the course of a multiyear MDA program. Methods: In data from a 5-year study of school-based and village-wide preventive chemotherapy strategies for Schistosoma mansoni, spatial scan statistics were used to find infection hotspots in 3 populations: 5- to 8-year-olds, 9- to 12-year-olds, and adults. Negative binomial regression was used to analyze changes from baseline, and receiver operating characteristic analyses were used to predict which villages would reach prevalence and intensity endpoints. Results: We identified a persistent hotspot, not associated with study arm, where S. mansoni infection prevalence and intensity did not decrease as much as in villages outside the hotspot. Significant differences from baseline were realized after 1 year of MDA: we did not identify factors that moderated this relationship. Villages meeting specified endpoints at year 5 were predicted from prior year data with moderately high sensitivity and specificity. Conclusions: The MDA strategies were less effective at reducing prevalence and intensity in the hotspot compared with other villages. Villages that reached year 5 endpoints could be detected earlier, which may provide the opportunity to amend intervention strategies.

Indexed as

AdultAnimalsChildChild, PreschoolCross-Sectional StudiesGeographic MappingHumansKenyaPraziquantelPrevalenceSchistosoma mansoniSchistosomiasisSchistosomiasis mansoniSchoolsTopography, MedicalPraziquantelmass drug administrationpersistent hotspotschistosomiasisspatial clusters

Identifiers

PMID28968877
PMCPMC5913648
OpenAlexW2754150397

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.