Methods: 
We adapted the Human Capital Model and Health Production Function approach which posits that health expenditure is introduced as one of the inputs into healthcare ‘production. We collected secondary data from Global Health Expenditure database, Global Health Observatory database of World Health Organization and Central Bank of Nigeria Statistical database from 2000-2021. Missing data was forecasted using the three-year period average method. The variables used are cases treated for onchocerciasis, expenditures on NTDs and control variables. To ensure accurate results, stochastic properties of the data were tested using Augmented Dickey Fuller Test while the model was estimated using Least Square method.
