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[Intestinal parasites in children in Biankouma, Ivory Coast (mountaineous western region): efficacy and safety of praziquantel and albendazole].

Schistosomiasis and soil-transmitted helminthiasis are a global public health problem, especially among schoolchildren. The purpose of this study was to determine the overall and specific prevalences of intestinal helminth infection and to assess the clinical efficacy, tolerance, and safety of praziquantel and albendazole for treating it. A descriptive cross-sectional study based on random sampling with one degree of freedom was conducted from November 2006 to March 2007 in the primary schools of Biankouma, Côte d'Ivoire. Stool samples were collected from 386 children aged from 4 to 15 years and analyzed by direct examination, with both the simplified Ritchie and Kato techniques. Children infected by schistosomiasis and soil-transmitted helminthiasis eggs were treated with praziquantel (40 mg/kg in a single dose), albendazole (400 mg/kg in a single dose) or both, as deemed necessary. The prevalence rate of intestinal parasite infection was 55.2%, including overall 15.4% with more than one parasite: two in 14.2% and three in 1.2%. Infection was correlated with male gender and older age. The most frequent helminths were Schistosoma mansoni (35.5%) and Necator americanus (25.9%). The efficacy rate for praziquantel, defined as parasite-free stools, was 57.7% on day 14 and 80.9% on day 90. The efficacy rate for albendazole on day 7 was 96.1% for Ascaris lumbricoides, 93% for Necator americanus and 81.3% for Trichuris trichiura. Adverse effects were common (40.8%) but minor (abdominal pain, headache, and itching) within 2 to 4 hours after intake of praziquantel.