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ZAMREC 0003\/Sept\/011), the Ethics Committee of Basel, Switzerland (reference no. EKBB 236\/11), and the Institutional Review Board of the University of Georgia in the USA (project no. 2012-10138-0) [\n                      \n                      ]. The study is registered with the International Standard Randomized Controlled Trial Number register (ISRCTN48837681). All children and adults invited to participate in the study received a participant information sheet and a consent sheet. The study was explained in lay terms to the children in school and to the adults in the communities using the local language Kiswahili. Only individuals, who submitted a written informed consent for their participation, were included in the study. In the case of children, parents or their legal guardians were asked to provide their written consent for the child\u2019s participation. All study participants were offered praziquantel (40 mg\/kg) against schistosomiasis and albendazole (400 mg) against soil-transmitted helminthiasis free of charge <i>via<\/i> the biannual island-wide mass drug administration conducted as part of the elimination interventions by the Zanzibar Neglected Diseases Programme in 2013, 2014, 2015 and 2016.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}},{"value":"Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Publisher\u2019s Note"}}],"article-number":"552"}}