A cross-sectional survey was carried out in primary schools to determine prevalence, intensity and spatial co-distribution of Schistosomiasis and soil transmitted helminths (STH) infections in Ogun State, Nigeria. A total of 2148 pupils from 42 schools were examined for Schistosoma and STH infections from urine and fresh fecal samples respectively. Ethyl ether concentration method prepared in sodium acetate – acetic acid – formalin ether was used to concentrate parasites’ ova before microscopic examination. The overall prevalence of schistosomiasis and STH infections were 4.0% (95% CI = 3.21–4.92) and 34.64% (95% CI = 32.62–36.69) respectively. Schistosoma haematobium and Ascaris lumbricoides were the most prevalent across the study area among the Schistosoma and STH species respectively. Overall, intensity of infection was higher in males than in females for all Schistosoma and STH infections, but with no significant difference (P > 0.05), except for Trichuris trichiura (χ2 = 6.490, P < 0.05). Infection intensity was significantly inversely correlated (χ2 = 12.953, P < 0.05) with an increase in age group. Co-distribution of Schistosoma and STH infections occurred in 15 (35.7%) out of 42 schools, and only 30 children (1.4%) had co-infection of Schistosoma and STH. This study provides information on the prevalence and spatial risk of schistosomiasis and STH in Ogun State. This will serve as decision-support tool for Ogun State programme managers to help facilitate integration of schistosomiasis and STH control.

This cross-sectional study determined the prevalence and distribution of schistosome and soil-transmitted helminth (STH) infections among 1,308 children aged 10–18 years in 34 primary schools in 8 informal urban settlements in Kisumu City, western Kenya. Stool samples were collected and examined for eggs of Schistosoma mansoni and STH (Hookworms, Ascaris lumbricoides and Trichuris trichiura) using the Kato-Katz technique. Haematuria was used as a proxy indicator of urinary schistosomiasis. Schools and water bodies were mapped using a geographical information system. Overall, 34% of children were infected with one or more helminth species whereas 16·2% of children were infected with one or more STH species. Schools in closest proximity to Lake Victoria and River Nyamasaria had the highest S. mansoni prevalence while schools with STH were more homogenously distributed. Mean school prevalence of S. mansoni infection was 21% (range=0–69·7%), S. haematobium 3·6% (range=0–12%), hookworms 6·1% (range=0–20%), A. lumbricoides 4·9% (range=0–18·4%), and T. trichiura 7·7% (range=0–18·6%). Helminth-related morbidities were not associated with infection. Our study demonstrates that schistosomiasis and STH are important health priorities among schools in informal settlements of Kisumu City, and highlights the need for routine deworming in similar settings.