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Prevalence and risk factors associated with Enterobius vermicularis infection among 3 to 10-year-old children in the Halpathota Central Grama Niladari Division of Baddegama, Galle District, Sri Lanka
Sri Lankan Journal of Infectious Diseases 16(1) · 2026
https://doi.org/10.4038/sljid.v16i1.8834
Abstract
Introduction: Enterobiasis, caused by the nematode Enterobius vermicularis (pinworm), remains one of the most common helminth infections worldwide, particularly affecting school aged children. This study investigated the prevalence and risk factors of E. vermicularis infection among children aged 3-10 years in the Halpathota Central Grama Niladari Division of Baddegama in Galle District, Sri Lanka.Methods: Using a descriptive cross-sectional study design, data was collected in August 2024 through interviewer-administered structured questionnaires and perianal scotch tape swabs for parasite detection. Detailed instructions were provided to parents/caregivers on the sampling process. Microscopic examination of swabs was done at the laboratory of the Department of Parasitology, University of Colombo. Data were analysed using SPSS statistical software v27 with calculation of frequencies and proportions for categorical variables, while chi-square and multivariate analyses were done to investigate factors linked to prevalence of enterobiasis. Ethical clearance for the study was obtained from the Ethics Review Committee of the Faculty of Medicine, University of Colombo.Results: Among 123 successfully analysed samples, the prevalence of enterobiasis was found to be 29.3% (n=36). While all parents/caregivers were aware of enterobiasis, significant risk factors associated with infection included younger age (3-7 years, p=0.027), inadequate hand washing before meals (p
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