Özet:

Abstract Introduction: Health surveillance (Visa) is a primary function of the State for the protection of individual and collective health through risk control actions, current or potential, present in the production of goods and services, and is part of SUS (Brazilian Universal Health System). Health surveillance of health services is part of Visa’s scope of action for the control of risks and iatrogenic diseases in health services. Objective:  To analyze challenges to the performance of Visa in health services. Method: The study, with a qualitative approach, integrates research funded by CNPq to analyze the sanitary control carried out by Visa in health services of primary and specialized care; the Focus Group technique was used with Visa workers from 8 Brazilian states. The speeches were transcribed and analyzed according to the thematic content analysis technique, systematized in two categories: Management and Organization of Services, and Working Conditions. Results: Problems and challenges were identifed, such as: incipient planning of actions; difculties in the organization of work, resulting from the turnover of managers, the lack of human and technological resources, and the lack of coordination and integration of the levels of the National Health Surveillance System. Dissatisfactions and challenges about working conditions, precarious employment conditions, low wages, incomplete teams and the need for public tenders and work valorization emerged. Conclusions: Visa’s performance in health services requires overcoming multiple challenges, which permeate the integration of actions at different levels of management and training issues, incorporation of technologies and readjustment of work processes.

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