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Household finished flooring and soil-transmitted helminth and Giardia infections among children in rural Bangladesh and Kenya: a prospective cohort study

Article scientifique 2020 Anglais

Résumé

Abstract Background Soil-transmitted helminths (STH) and Giardia duodenalis are responsible for a large burden of disease globally. In low-resource settings, household finished floors (e.g., concrete floors) may reduce transmission of STH and G. duodenalis . Methods In a prospective cohort of children nested within two randomised trials in rural Bangladesh and Kenya, we estimated associations between household finished flooring and STH and G. duodenalis prevalence. In 2015-2016, we collected stool samples from children aged 2-16 years in rural Bangladesh and Kenya. We detected STH infection using qPCR (Bangladesh N=2,800; Kenya N=3,094) and detected G. duodenalis using qPCR in Bangladesh (N=6,894) and ELISA in Kenya (N=8,899). We estimated adjusted prevalence ratios (aPRs) using log-linear models adjusted for potential confounders. Findings At enrolment, 10% of households in Bangladesh and 5% in Kenya had finished floors. In both countries, household finished flooring was associated with lower Ascaris lumbricoides prevalence (Bangladesh aPR: 0.33, 95% CI 0.14, 0.78; Kenya aPR: 0.62, 95% CI 0.39, 0.98) and any STH (Bangladesh aPR: 0.73, 95% CI 0.52, 1.01; Kenya aPR: 0.57, 95% CI 0.37, 0.88). Household finished floors were also associated with lower Necator americanus prevalence in Bangladesh (aPR: 0.52, 95% CI 0.29, 0.94) and G. duodenalis prevalence in both countries (Bangladesh aPR: 0.78, 95% CI 0.64, 0.95; Kenya: aPR: 0.82, 95% CI 0.70, 0.97). Interpretation In low-resource settings, living in households with finished floors over a two-year period was associated with lower prevalence of G. duodenalis and certain STH in children. Funding Bill & Melinda Gates Foundation grant OPPGD759

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Benjamin‐Chung, J., Crider, Y., Mertens, A., Ercümen, A., Pickering, A., Lin, A., Steinbaum, L., Swarthout, J., Rahman, M., Parvez, S., Haque, R., Njenga, S., Kihara, J., Null, C., Luby, S., Colford, J., Arnold, B. (2020). Household finished flooring and soil-transmitted helminth and Giardia infections among children in rural Bangladesh and Kenya: a prospective cohort study. https://doi.org/10.1101/2020.06.23.20138578

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Auteur(s)

Jade Benjamin‐Chung Yoshika S. Crider Andrew Mertens Ayşe Ercümen Amy J. Pickering Audrie Lin Lauren Steinbaum Jenna M. Swarthout Mahbubur Rahman Sarker Masud Parvez Rashidul Haque Sammy M. Njenga Jimmy Kihara Clair Null Stephen P. Luby John M. Colford Benjamin F. Arnold

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