COVID-19 is highly contagious, and there is an asymptomatic incubation period after being infected with human body. The incubation period is generally 1- 14 days. Therefore, according to the incubation period, the close contacts of COVID-19 patients need to be isolated for 1- 14 days, and at the same time, they need to be isolated on 1, 4, 7 and 14 days.
During the isolation period, we should also observe whether there are clinical manifestations of infection such as fever, cough and fatigue. Only when the nucleic acid results are negative for three times can the quarantine period expire. After the isolation is lifted, they need to be monitored at home for 7 days. During the monitoring period, their body temperature should be recorded, and nucleic acid detection should be carried out on the second and last day of monitoring. If COVID-19 infection is diagnosed during isolation, it is necessary to continue isolation and carry out corresponding treatment.