1. Health monitoring: Patients infected with novel coronavirus in the past should be closely monitored for their vital signs and clinical symptoms after their nucleic acid detection or antigen negative after treatment, and do a good job in health monitoring;
2. Regular follow-up: If the patient is seriously infected with novel coronavirus, the lung shadow may not be fully absorbed, or he still has respiratory symptoms such as cough, chest tightness, wheezing and fatigue. It is necessary to continue rehabilitation treatment, do a good job of dynamic follow-up, regular chest CT examination and pulmonary function examination.
3. Active protection: When patients leave the hospital, they should still do personal protection, insist on wearing masks, wash their hands frequently, strengthen hand hygiene, pay attention to social distance, and try to avoid participating in gathering activities.
In addition to the above precautions, if patients infected with novel coronavirus in the past turn negative after treatment, and suffer from basic diseases, such as hypertension, diabetes, coronary heart disease, etc. They should also continue to insist on the treatment of the original diseases. Vaccination with novel coronavirus vaccine has a certain effect on preventing Omicron strain. Therefore, COVID-19 vaccine has not been standardized and turned negative for Omicron.