Urogenital schistosomiasis transmission on Unguja Island, Zanzibar: characterisation of persistent hot-spots Author Pennance, Tom Author Person, Bobbie Author Muhsin, Mtumweni Ali Author Khamis, Alipo Naim Author Muhsin, Juma Author Khamis, Iddi Simba Author Mohammed, Khalfan Abdallah Author Kabole, Fatma Author Rollinson, David Author Knopp, Stefanie text Parasites & Vectors 2016 646 2016-12-16 9 1 1 13 http://dx.doi.org/10.1186/s13071-016-1847-0 journal article 298612 10.1186/s13071-016-1847-0 a77be152-90d4-462b-9429-9366a5c6db61 1756-3305 PMC5162088 27986092 11552323 Prevalence of S. haematobium in persistent hot-spot and low-prevalence shehias Table 1 shows the prevalence of S. haematobium in children visiting the primary schools located in any of the seven study shehias, stratified by survey year. The average S. haematobium prevalence across all three survey years in 9 – 12 years old schoolchildren was 20.0 % (95 % CI: 18.1 – 22.0) in the five persistent hot-spot shehias and 0.78 % (95 % CI: 0.0 – 1.5) in the two low-prevalence shehias. Schoolchildren in Koani shehia had the highest average prevalence of 26.4 % considering all surveys conducted in schools between 2012 and 2014 and also had the highest single-year prevalence of 37.6 % in 2013.