Precision mapping of schistosomiasis and soil-transmitted helminthiasis among school age children at the coastal region, Kenya.
PLoS Negl Trop Dis
; 17(1): e0011043, 2023 01.
Article
em En
| MEDLINE
| ID: mdl-36602986
ABSTRACT
BACKGROUND:
Accurate mapping of schistosomiasis (SCH) and soil transmitted helminths (STH) is a prerequisite for effective implementation of the control and elimination interventions. A precision mapping protocol was developed and implemented in the coastal region of Kenya by applying the current World Health Organization (WHO) mapping guide at a much lower administrative level (ward).METHODS:
A two-stage cluster survey design was undertaken, with 5 villages in each ward selected. From within each village 50 households were randomly selected, and a single child between the ages of 8 and 14 sampled following appropriate assent. The prevalence and intensity of infection of Schistosoma mansoni and STH were determined using the Kato-Katz method (single stool, duplicate slides) and urine filtration for S. haematobium.RESULTS:
Of the 27,850 school age children sampled, 6.9% were infected with at least one Schistosoma species, with S. haematobium being the most common 6.1% (95% CI 3.1-11.9), and Tana River County having highest prevalence 19.6% (95% CI 11.6-31.3). Prevalence of any STH infection was 5.8% (95% CI 3.7-8.9), with Lamu County having the highest prevalence at 11.9% (95% CI 10.0-14.1). The most prevalent STH species in the region was Trichuris trichiura at 3.1% (95% CI 2.0-4.8). According to the WHO threshold for MDA implementation, 31 wards (in 15 sub-Counties) had a prevalence of ≥10% for SCH and thus qualify for annual MDA of all age groups from 2 years old. On the other hand, using the stricter Kenya BTS MDA threshold of ≥2%, 72 wards (in 17 sub-Counties) qualified for MDA and were targeted for treatment in 2021.CONCLUSIONS:
The precision mapping at the ward level demonstrated the variations of schistosomiasis prevalence and endemicity by ward even within the same sub-counties. The data collected will be utilized by the Kenyan Ministry of Health to improve targeting.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Esquistossomose
/
Helmintíase
/
Helmintos
Tipo de estudo:
Guideline
/
Prevalence_studies
/
Qualitative_research
/
Risk_factors_studies
Limite:
Adolescent
/
Animals
/
Child
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Child, preschool
/
Humans
País/Região como assunto:
Africa
Idioma:
En
Revista:
PLoS Negl Trop Dis
Assunto da revista:
MEDICINA TROPICAL
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Quênia