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Impact of Community Leprosy Screening on Early Detection of Leprosy among Residents of Rural Communities in Nigeria

Abstract

Leprosy remains an important public health concern in Nigeria, particularly in communities where delayed diagnosis may contribute to continued transmission, disability, stigma, and social exclusion. Although leprosy is curable, individuals may experience prolonged periods before diagnosis because early symptoms can be subtle, community awareness may be limited, and affected persons may delay seeking healthcare because of stigma, misconceptions, fear, financial barriers, or poor access to health services. Community leprosy screening provides an opportunity to identify individuals with suspected signs of leprosy within their communities and facilitate early referral, diagnosis, and treatment. Early detection may reduce the risk of nerve damage, disability, complications, and further transmission. Against this background, this study investigates the impact of community leprosy screening on early detection of leprosy among residents of rural communities in Nigeria. The study will be anchored on the Health Belief Model, Social Ecological Model, and Andersen's Behavioral Model of Health Services Use. The Health Belief Model explains how residents' perceptions of susceptibility to leprosy, perceived severity, perceived benefits of screening, perceived barriers, and cues to action may influence participation in community screening and subsequent healthcare-seeking. The Social Ecological Model emphasizes the influence of individual, household, community, healthcare, and broader social factors on leprosy screening and early diagnosis. Andersen's Behavioral Model explains healthcare utilization through predisposing characteristics, enabling resources, and health needs, providing a framework for understanding access to screening, referral, and diagnostic services. Collectively, these theoretical perspectives provide a suitable framework for explaining how community leprosy screening may influence early detection of leprosy among residents of rural communities in Nigeria. The study will adopt a quantitative quasi-experimental or analytical cross-sectional research design. The study population will comprise adults aged 18 years and above residing in selected rural communities across Nigeria. A multistage sampling technique will be used to select geopolitical zones, states, local government areas, rural communities, households, and eligible residents. Community leprosy screening will be assessed using indicators such as availability and frequency of screening activities, screening coverage, trained screening personnel, community mobilization, skin examination procedures, assessment for sensory changes and other relevant signs, availability of referral arrangements, follow-up of suspected cases, and linkage with diagnostic and treatment services. Early detection of leprosy will be assessed using indicators such as identification of suspected cases during screening, time from onset of symptoms to identification, time from identification to confirmatory diagnosis, newly confirmed cases, classification of disease, detection of nerve involvement, detection before significant disability develops, referral completion, and initiation of appropriate treatment following diagnosis. Data will be collected using structured questionnaires, community screening registers, standardized screening forms, referral records, healthcare-facility records, leprosy treatment registers, and relevant public health programme documents. Descriptive statistics will be used to summarize participants' characteristics, screening coverage, suspected cases, confirmed cases, and patterns of early detection. 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 leprosy screening on early detection of leprosy. Where a quasi-experimental design is adopted, detection rates and time-to-diagnosis indicators before and after implementation of community screening may be compared with those of a comparison community or group to determine changes associated with the intervention. Diagnostic tests will also be conducted to assess the reliability, validity, and robustness of the findings. The study is expected to find that community leprosy screening has a significant positive impact on early detection of leprosy among residents of rural communities in Nigeria. Residents who participate in community screening are expected to have a higher likelihood of having previously unrecognized signs of leprosy identified and being referred for appropriate diagnostic assessment than residents without comparable access to screening. Community screening may reduce delays associated with limited awareness, geographical barriers, and reliance on individuals recognizing symptoms and presenting independently at healthcare facilities. Early identification may facilitate timely confirmatory diagnosis and initiation of multidrug therapy, thereby reducing the risk of nerve damage, disability, and other complications. Community-based screening may also increase awareness of leprosy symptoms, reduce misconceptions, and encourage affected individuals to seek appropriate care. However, stigma, shortage of trained personnel, limited diagnostic capacity, inadequate referral systems, poor follow-up, transportation difficulties, and fear of social discrimination may reduce the effectiveness of screening programmes. The study therefore expects accessible, community-based, culturally appropriate, and well-integrated leprosy screening services to contribute significantly to improved early detection and management of leprosy in rural Nigeria. The study is expected to contribute to the literature on leprosy screening, early disease detection, neglected tropical diseases, community health, disability prevention, infectious disease control, health education, rural healthcare, 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, Nigeria Centre for Disease Control and Prevention, state ministries of health, local government health authorities, primary healthcare centres, dermatology and leprosy-control programmes, community health workers, development partners, disability organizations, and policymakers regarding strategies for strengthening leprosy control. The study will also provide evidence-based recommendations for expanding community-based leprosy screening, strengthening early referral and diagnostic services, training community health workers, improving community awareness, reducing leprosy-related stigma, strengthening follow-up systems, and ensuring timely access to appropriate treatment and disability-prevention services across rural communities in Nigeria.

Keywords: Community leprosy screening, early detection, leprosy, rural communities, leprosy control, neglected tropical diseases, disability prevention, community health, infectious disease prevention, Nigeria, public health.