The foregoing study on pages 218-225 was submitted in May 2019. http://dx.doi.org/10.4314/njpar.v40i2.18  Parasitology and Public Health Society of Nigeria, 2019. Nigerian Journal of Parasitology ISSN 1117 4145 Volume 40[2] September 2019 Epidemiological mapping of schistosomiasis and soil-transmitted helminthiasis for intervention strategies in Nigeria Nduka, F., 2 Nebe, O. J., 1 Njepuome, N., 1 Dakul, D. A., 3 Anagbogu, I. A., 1 Ngege, E., 1 Jacob, S. M. 1 Nwoye, I. A., 1 Nwankwo, U., 1 Urude, R., 1 Aliyu, S. M., 4 Garba, A., 4 Adamani, W., 5 Nwosu, C., 5 Clark, A., 5 Mayberry, A., Mansiu, K., Nwobi, B., Isiyaku, S., 5 Dixon, R., 6 Adeoye, G. O. 7 and Amuga, G. A. 8 1 Department of Public Health, Federal Ministry of Health, Abuja, Nigeria 2 Department of Animal and Environmental Biology, University of Port Harcourt, Nigeria 3 Department of Zoology, University of Jos, Nigeria 4 World Health Organization, Country Office, Abuja, Nigeria 5 Sightsavers Country Office, Kaduna, Nigeria 6 Sightsavers, 35 Perrymout Road, Haywards Heath, RH16 3BW 7 Department of Zoology, University of Lagos, Nigeria 8 Department of Zoology, Nasarawa State University, Keffi, Nigeria emaii: kamuga2@yahoo.com Abstract Helminth infections caused by schistosomes and soil-transmitted helminths (STHs) are among the most prevalent afflictions of humans who live in areas of poverty in the developing world. The level of morbidity and mortality caused by these helminthes requires urgent intervention. This study reports on the epidemiological mapping and intervention strategies for the control of schistosomiasis and STH in Nigeria. Epidemiological survey on the prevalence of schistosomiasis and STH was conducted in Nigeria between November 2013 and May 2015 in 19 States of the Federation and the Federal Capital Territory (FCT), covering 2,160 schools /communities in 433 LGAs. Urine and faecal samples were collected from 108,472 pupils comprising 57,670 (53.2%) males and 50,802 (46.8%) females of age range 5 to 16 years. The samples were analysed using urine filtration and Kato- Katz techniques. The target population for intervention was determined using the World Health Organization Guidelines for intervention strategies. Prevalence of 9.5% and 27% were recorded for schistosomiasis and soil transmitted helminthiasis respectively from the pupils sampled. Highest prevalence of 26.1% was recorded in Niger State for schistosomiasis while the lowest was in Rivers State (0.1%). STH had highest prevalence in Akwa Ibom State (58.4%) and lowest in Yobe State (1.4%). Niger State also had the highest prevalence for co-infection (8.96%). Based on the prevalence of schistosomiasis observed, a total of 202 LGAs fall within the low risk category, 153 moderate and four LGAs were high risk category. The high risk LGAs were located in Niger and Kebbi States. Case-based management is required for STH in 191 LGAs while 177 LGAs fall within the low-risk and 60 LGAs were in the high risk categories. The findings of this study highlighted the treatment interventions required to facilitate scale up of appropriate mass administration of medicine, water, sanitation and hygiene intervention in the 19 States of the Federation and the FCT. Keywords: Schistosomiasis; soil-transmitted helminthiasis; prevalence; intervention strategy; risk; control; treatment. Introduction Schistosomiasis and Soil-Transmitted Helminthiasis (STH) are Neglected Tropical Diseases (NTDs) that are associated with poverty and affect people in most deprived communities. The World Health Organization (WHO) estimates that 249 million people around the