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Mapping of schistosomiasis and soil-transmitted helminthiases across 15 provinces of Angola.

Authors :
Elsa Palma Mendes
Hajra Okhai
Rilda Epifânia Cristóvão
Maria Cecília Almeida
Nzuzi Katondi
Ricardo Thompson
Sylvain Mupoyi
Pauline Mwinzi
Onesime Ndayishimiye
Ferdinand Djerandouba
Mary Chimbilli
Julio Ramirez
Erna Van Goor
Sergio Lopes
Source :
PLoS Neglected Tropical Diseases, Vol 16, Iss 6, p e0010458 (2022)
Publication Year :
2022
Publisher :
Public Library of Science (PLoS), 2022.

Abstract

IntroductionSchistosomiasis (SCH) and soil transmitted helminthiases (STH) have been historically recognized as a major public health problem in Angola. However, lack of reliable, country wide prevalence data on these diseases has been a major hurdle to plan and implement programme actions to target these diseases. This study aimed to characterize SCH and STH prevalence and distribution in Angola.MethodsA country wide mapping was conducted in October 2018 (1 province) and from July to December 2019 (14 provinces) in school aged (SAC) children in 15 (of 18) provinces in Angola, using WHO protocols and procedures. A total of 640 schools and an average of 50 students per school (N = 31,938 children) were sampled. Stool and urine samples were collected and processed using the Kato-Katz method and Urine Filtration. Prevalence estimates for SCH and STH infections were calculated for each province and district with 95% confidence intervals. Factors associated with SCH and STH infection, respectively, were explored using multivariable logistic regression accounting for clustering by school.ResultsOf the 131 districts surveyed, 112 (85.5%) are endemic for STH, 30 (22.9%) have a prevalence above 50%, 24 (18.3%) are at moderate risk (prevalence 20%-50%), and 58 (44.3%) are at low risk (50% prevalence), 59 (45.0%) are at moderate risk (10%-50% prevalence), and 57 (43.5%) are at low risk (ConclusionsThis mapping exercise provides essential information to Ministry of Health in Angola to accurately plan and implement SCH and STH control activities in the upcoming years. Data also provides a useful baseline contribution for Angola to track its progress towards the 2030 NTD roadmap targets set by WHO.

Details

Language :
English
ISSN :
19352727 and 19352735
Volume :
16
Issue :
6
Database :
Directory of Open Access Journals
Journal :
PLoS Neglected Tropical Diseases
Publication Type :
Academic Journal
Accession number :
edsdoj.6b3fe5b6ae1c458fa2819cd4e636a1c8
Document Type :
article
Full Text :
https://doi.org/10.1371/journal.pntd.0010458