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Impact of Community-Based Schistosomiasis Control on Schistosomiasis Infection among School Children in Nigeria

Abstract

Schistosomiasis remains an important neglected tropical disease and public health concern in Nigeria, particularly among school-aged children living in communities where freshwater exposure, inadequate sanitation, unsafe water sources, and limited access to preventive health services increase the risk of infection. Repeated exposure to contaminated freshwater can facilitate transmission of Schistosoma parasites, while persistent infection may contribute to anaemia, poor physical development, reduced school attendance, impaired learning, and other adverse health outcomes. Community-based schistosomiasis control provides an opportunity to reduce transmission through health education, preventive chemotherapy, improved access to safe water, sanitation and hygiene interventions, environmental measures, community mobilization, and early identification and referral of suspected cases. However, inadequate programme coverage, irregular treatment, limited access to safe water and sanitation, poor community participation, and continued exposure to infested freshwater may reduce the effectiveness of control activities. Against this background, this study investigates the impact of community-based schistosomiasis control on schistosomiasis infection among school children in Nigeria. The study will be anchored on the Social Ecological Model, Health Belief Model, and Health Systems Framework. The Social Ecological Model emphasizes the interaction between individual, household, school, community, environmental, and health-system factors in influencing schistosomiasis exposure and prevention. The Health Belief Model explains how children's and caregivers' perceptions of susceptibility to schistosomiasis, perceived severity, perceived benefits of preventive measures, perceived barriers, and cues to action may influence participation in control activities and adoption of protective behaviours. The Health Systems Framework emphasizes service delivery, health workforce, health information, medical products and technologies, financing, governance, and accessibility as important components of effective disease-control programmes. Collectively, these theoretical perspectives provide a suitable framework for explaining how community-based schistosomiasis control may influence schistosomiasis infection among school children in Nigeria. The study will adopt a quantitative quasi-experimental or community-based comparative research design. The study population will comprise school-aged children enrolled in selected primary and secondary schools within communities where schistosomiasis transmission occurs or where children have regular exposure to potentially contaminated freshwater. A multistage sampling technique will be used to select states, local government areas, endemic communities, schools, classes, and eligible school children. Community-based schistosomiasis control will be assessed using indicators such as coverage of preventive chemotherapy, frequency of community health education, school and community sensitization activities, availability of safe water, sanitation and hygiene interventions, freshwater exposure education, community participation, environmental control activities where applicable, availability of trained health personnel, treatment coverage, follow-up activities, and referral arrangements. Schistosomiasis infection will be assessed using indicators such as laboratory-confirmed infection, parasite detection in urine or stool samples using appropriate diagnostic methods, infection prevalence, infection intensity where measurable, haematuria or other relevant clinical indicators, history of previous treatment, and treatment response. Data will be collected using structured questionnaires, school health records, community treatment registers, laboratory records, preventive chemotherapy records, WASH assessment checklists, and appropriate biological specimens collected and examined using approved diagnostic procedures. Descriptive statistics will be used to summarize children's characteristics, exposure patterns, control-programme coverage, and infection outcomes. Inferential statistical techniques, including chi-square tests, t-tests, correlation analysis, and logistic or multiple regression analysis where appropriate, will be used to determine the impact of community-based schistosomiasis control on infection among school children. Where a quasi-experimental design is adopted, infection prevalence before and after implementation of control activities may be compared, or children in communities receiving enhanced control interventions may be compared with children in similar communities receiving routine control activities. Diagnostic tests will also be conducted to assess the reliability, validity, and robustness of the findings. The study is expected to find that community-based schistosomiasis control has a significant negative impact on schistosomiasis infection among school children in Nigeria, indicating that effective control activities may reduce infection. Children living in communities with high coverage of preventive chemotherapy, regular health education, improved access to safe water and sanitation, and strong community participation are expected to have lower infection rates than children in communities with limited control activities. Health education may reduce risky freshwater exposure and encourage children and caregivers to participate in preventive treatment programmes. However, continued contact with contaminated freshwater, inadequate sanitation, limited access to safe water, incomplete treatment coverage, reinfection, poor community participation, and insufficient programme funding may limit the effectiveness of control interventions. The study therefore expects sustained, integrated, community-based schistosomiasis control programmes that combine preventive chemotherapy with water, sanitation, hygiene, health education, and environmental measures to contribute significantly to reducing schistosomiasis infection among school children in Nigeria. The study is expected to contribute to the literature on community-based schistosomiasis control, schistosomiasis infection, neglected tropical diseases, school health, preventive chemotherapy, water sanitation and hygiene, freshwater exposure, child health, and public health in Nigeria. The findings will provide useful information to the Federal Ministry of Health and Social Welfare, National Primary Health Care Development Agency, state ministries of health and education, local government health authorities, neglected tropical disease programmes, primary and secondary schools, community health workers, development partners, non-governmental organizations, and policymakers regarding strategies for strengthening schistosomiasis prevention and control. The study will also provide evidence-based recommendations for improving preventive chemotherapy coverage, strengthening school and community health education, expanding access to safe water and sanitation, reducing risky freshwater exposure, improving community participation, strengthening surveillance and monitoring systems, and integrating schistosomiasis control into broader neglected tropical disease and school health programmes across Nigeria.

Keywords: Community-based schistosomiasis control, schistosomiasis infection, school children, neglected tropical diseases, preventive chemotherapy, freshwater exposure, water sanitation and hygiene, school health, Nigeria, public health.