Algorithm 1

Risk stratification of HCW in contact with confirmed COVID-19 cases. Abbreviations: HCW health care worker, AGP aerosol generating procedure, PPE personal protective equipment. *Brief interactions include: brief conversation at a triage desk; briefly entering a patient room but not having direct contact with the patient or the patient’s secretions/excretions; entering the patient room immediately after the patient was discharged. A record of HCW exposed to suspected COVID-19 patient should be maintained and HCW should be encouraged to perform self-monitoring while awaiting test results. If the results will be delayed more than 72 hours or the patient proved positive for COVID-19, then the monitoring and work restrictions described in this algorithm should be followed