2025-05-072025-05-072018MELO, Maria Aparecida de Souza et al. Percepção dos profissionais de saúde sobre os fatores associados à subnotificação no Sistema Nacional de Agravos de Notificação. Revista de Administração em Saúde, São Paulo, v. 18, n. 71, p. 1-17, 2018. DOI: 10.23973/ras.71.104. Disponível em: https://cqh.org.br/ojs-2.4.8/index.php/ras/article/view/104. Acesso em: 30 abr. 2025.e- 2526-3528http://repositorio.bc.ufg.br//handle/ri/27472Objective: To identify factors that contribute to the underreporting of diseases and compulsory notification harms in the National System of Notification Diseases (Sinan), in the perception of health professionals. Methods: A conducted study based on the Critical Incidents Technique for data collection and content analysis, in a stratified sample of workers and managers of the health surveillance units responsible for notifying diseases and notifiable harms. Results: The reported cases were associated with 33 diseases and compulsory notification harms and the main behaviors were non-notification or late notification in Sinan. The doctor’s and nurse's conduct, difficulties in the notification process, and problems related to the patient and / or family were the main factors associated with underreporting. Conclusion: Underreporting is a reality experienced in patient care units and hides the real health situation of the population.porAcesso Abertohttp://creativecommons.org/licenses/by-nc-nd/4.0/Vigilância epidemiológicaSistemas de informação em saúdeNotificação compulsóriaNotificação de doençasEpidemiological surveillanceHealth information systemsMandatory reportingDisease notificationArtigo10.23973/ras.71.104