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Background: Information systems integrate elements that interact as a complex process for data acquisition, processing, and analysis for decision making.Objective: To provide an overview of health information systems (HIS) used in regular practice in a third-level, highly specialized institute.Methods: Transversal, overview, and epidemiological data flow.Describe the main process for the regular functioning of the third-level hospital, and give a global system overview and epidemiological data flow and architecture of an information system and its applications with special emphasis on COVID-19 surveillance, and data caption-validation processes around the hospital.Results: Analyzing the functioning of HIS is a basic need for health-care organizations, especially when they develop research in different areas.The structure and characteristics of these systems can help to encourage other organizations to perform or strengthen their systems.Conclusion: HIS are growing among facilities, increase the discussion of basic elements and quality of HIS used in health care, research, and other activities by considering newer processes and emerging needs.National Institute of Cardiology Ignacio Chávez has played a supporting role in the pandemic COVID-19.
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Chavira-Trujillo et al. (2024) studied this question.
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