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Fig. 1 | BMC Infectious Diseases

Fig. 1

From: In-depth analysis of the risk factors for persistent severe acute respiratory syndrome coronavirus 2 infection and construction of predictive models: an exploratory research study

Fig. 1

Study Cohort Flow Diagram. Among 1,519 SARS-CoV-2-infected individuals screened at Aerospace Center Hospital (January 2021–October 2024), 303 were excluded due to age < 18 years (n = 68), incomplete follow-up/irregular nucleic acid testing (n = 185), missing critical clinical data (n = 40), or participation in other trials (n = 10). The final analytic cohort included 1,216 adults (≥ 18 years) with confirmed infection, complete clinical records, and standardized follow-up data

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BMC Infectious Diseases

ISSN: 1471-2334

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