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Questionnaires and clinical observations are significant components of human and veterinary epidemiology surveys, providing a comprehensive prognosis of the occurrence and prevalence of diseases. The information compiled by these two survey methods is equally important for establishing an epidemiological surveillance system for disease outbreak management. This review summarizes 57 previous surveys, including questionnaires and clinical observations on sheep myiasis globally from 1976 to 2023, with an emphasis on their methodologies and areas of findings. Overall, this review establishes a baseline understanding of the essential entomological and veterinary aspects required for designing questionnaires and clinical observation surveys on sheep myiasis. Additionally, it provides guidance for implementing future study protocols and proposes a farmer-based approach that integrates these techniques to achieve improved outcomes in mitigating sheep myiasis.