A cross-sectional study was conducted to determine the prevalence and intensity of soil-transmitted helminthiasis and urinary schistosomiasis and the co-infection of these intestinal helminths among school children in Saki town, Oyo state, Nigeria. Early morning stool samples were collected and a Kato-Katz thick smear technique was used to examine and count parasitic load.Urine samples were also collected and examined for Schistosoma haematobium ova using sedimentation technique. A pre-tested structured questionnaire was used to collect socio-demographic data, knowledge attitude and practice of individuals towards disease transmission and control. The study was conducted between August and October, 2011; out of 1537 children examined, 956 (62.2%) of the study participants were infected with one or more parasites. Ascaris lumbricoides was the most frequently observed soil-transmitted helminths with a prevalence of 39.6% followed by hookworm (18.3%) and Trichuris trichiura (12.9%). S. haematobium was detected in 32.7% of the school children. Multiple infections were pronounced with 54.3% having double infections and 17.7% having triple infections. The most common double infections were Ascaris and S. haematobium (28.9%), while the most common triple infections were Ascaris, hookworm and S. haematobium (10.6%). Prevalence and intensity of soil-transmitted helminth and S. haematobium was high and there is the need for urgent intervention programmes against these parasites in the study area.
Key words: Soil-transmitted helminthiasis, schistosomiasis, epidemiology, prevalence, Schistosoma haematobium, Nigeria.
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