Ideas in this flowchart

• Research on defining, measuring, and predicting post-COVID-19 condition
• Definition of post-COVID-19 condition
• Measurement and characterization of long COVID
• Prediction, prevention, treatment, and research ethics
• Soriano et al. established a clinical case definition through a Delphi consensus.
• Marshall et al. proposed a minimal common outcome measure set for COVID-19 clinical research.
• Ejalonibu et al. reviewed patient-reported outcome measures for characterizing long COVID.
• Baalmann et al. reviewed patient-reported outcome instruments and their measurement properties.
• Sorensen et al. examined the construct validity of self-reported and interview-guided Danish Post-COVID-19 Functional Status assessments.
• Studies addressed predictors and risk tools for long-term sequelae.
• Studies examined vaccination for the prevention and treatment of long COVID.
• Studies addressed ethical principles for medical research involving human subjects.