As long as one person in a family is infected, the whole family must be isolated, because they are close contacts, otherwise more people will be infected. According to the principle of prevention and control in COVID-19, anyone who is tested positive for nucleic acid and is associated with it and judged to be in close contact should be isolated for observation. Close contacts are isolated for 5 days in concentration and 3 days at home.
And if you have the conditions, do a nucleic acid test and don't run around. Because of the high risk of infection, plus the increased risk of positive and family contact, the whole family must be isolated and controlled.
4. The specific steps are as follows: If you find that your family's nucleic acid test results are positive, don't panic. CDC will contact you by direct telephone or community notification, and ask you to wait in place. Ambulances and staff will take them to designated hospitals or receiving hospitals as soon as possible. Positive patients should be self-isolated as soon as possible according to the guidelines, and do not contact with other family members. Wear a mask, close the door, and prepare your belongings for routine hospitalization. Other family members should wear masks, try to avoid being in the same room with them, wash their hands and disinfect as soon as possible, and prepare for isolation.