Back to Search
Start Over
A Persistent Hotspot of Schistosoma mansoni Infection in a Five-Year Randomized Trial of Praziquantel Preventative Chemotherapy Strategies.
- Source :
-
The Journal of infectious diseases [J Infect Dis] 2017 Dec 12; Vol. 216 (11), pp. 1425-1433. - Publication Year :
- 2017
-
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.<br />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.<br />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.<br />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.<br /> (Published by Oxford University Press for the Infectious Diseases Society of America 2017. This work is written by (a) US Government employee(s) and is in the public domain in the US.)
- Subjects :
- Adult
Animals
Child
Child, Preschool
Cross-Sectional Studies
Geographic Mapping
Humans
Kenya
Praziquantel administration & dosage
Prevalence
Schistosoma mansoni pathogenicity
Schistosomiasis drug therapy
Schools
Topography, Medical
Praziquantel therapeutic use
Schistosoma mansoni drug effects
Schistosomiasis mansoni drug therapy
Schistosomiasis mansoni epidemiology
Subjects
Details
- Language :
- English
- ISSN :
- 1537-6613
- Volume :
- 216
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- The Journal of infectious diseases
- Publication Type :
- Academic Journal
- Accession number :
- 28968877
- Full Text :
- https://doi.org/10.1093/infdis/jix496