{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T14:54:32Z","timestamp":1791384872740,"version":"4.3.3"},"reference-count":54,"publisher":"Springer Science and Business Media LLC","issue":"1","content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Parasites Vectors"],"published-print":{"date-parts":[[2012,12]]},"abstract":"<jats:title>Abstract<\/jats:title>\n          <jats:sec>\n            <jats:title>Background<\/jats:title>\n            <jats:p>Praziquantel is the drug of choice in preventive chemotherapy targeting schistosomiasis. Increasing large-scale administration of praziquantel requires monitoring of drug efficacy to detect early signs of development of resistance. Standard protocols for drug efficacy monitoring are necessary. Here, we determined the optimal time point for praziquantel efficacy assessment against <jats:italic>Schistosoma haematobium<\/jats:italic> and studied the dynamics of infection parameters following treatment.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Methods<\/jats:title>\n            <jats:p>Ninety school-aged children from south C\u00f4te d\u2019Ivoire with a parasitologically confirmed <jats:italic>S. haematobium<\/jats:italic> infection were treated with a single oral dose of praziquantel (40\u2009mg\/kg) and followed up for 62\u2009days post-treatment. Urine samples were collected on 23 schooldays during this period and were subjected to visual examination (macrohaematuria), urine filtration and microscopy (<jats:italic>S. haematobium<\/jats:italic> eggs) and reagent strip testing (microhaematuria, proteinuria and leukocyturia).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>Observed cure and egg reduction rates were highly dependent on the time point post-treatment. Egg reduction rates were high (&gt;97%) in weeks 3\u20139 post-treatment. Cure rates were highest in weeks 6 (92.9%) and 9 (95.0%) post-treatment. The prevalence of infection-associated parameters decreased after treatment, reaching a minimum of 2.4% in weeks 5 (proteinuria) and 7 (leukocyturia) post-treatment, and 16.3% at the end of week 8 (microhaematuria). Macrohaematuria disappeared between weeks 3 and 6 post-treatment.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p>For monitoring praziquantel efficacy against <jats:italic>S. haematobium<\/jats:italic>, we recommend that the cure rate is assessed at week 6 post-treatment. The egg reduction rate can be evaluated earlier, from day 14 post-treatment onwards. Reagent strips are a useful additional tool for evaluating treatment outcomes in areas with high endemicity, preferably at weeks 5 and 6 post-treatment. The delayed decrease of microhaematuria confirms that lesions in the urinary tract persist longer than egg excretion post-treatment.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1186\/1756-3305-5-298","type":"journal-article","created":{"date-parts":[[2012,12,21]],"date-time":"2012-12-21T11:14:48Z","timestamp":1356088488000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":47,"title":["Dynamics of Schistosoma haematobium egg output and associated infection parameters following treatment with praziquantel in school-aged children"],"prefix":"10.1186","volume":"5","author":[{"given":"Katarina","family":"Stete","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefanie J","family":"Krauth","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean T","family":"Coulibaly","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefanie","family":"Knopp","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jan","family":"Hattendorf","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"M\u00fcller","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laurent K","family":"Lohourignon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Winfried V","family":"Kern","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eli\u00e9zer K","family":"N\u2019Goran","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J\u00fcrg","family":"Utzinger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2012,12,21]]},"reference":[{"key":"799_CR1","doi-asserted-by":"publisher","first-page":"383","DOI":"10.1016\/j.idc.2012.03.004","volume":"26","author":"B Gryseels","year":"2012","unstructured":"Gryseels B: Schistosomiasis. 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