If pneumonia patients with novel coronavirus infection are found at home, close contacts should be isolated at home to avoid spreading the disease. Specific environmental requirements are as follows: 1. Place the close contacts in a single room with good ventilation and refuse all visits; 2. Restrict the activities of close contacts, minimize the common areas with family members’ activities, and ensure that common areas (such as kitchen, bathroom, etc.) are well ventilated; 3. Recommend the use of disinfectants containing chlorine or peracetic acid, and clean and disinfect items frequently touched by family members every day. Content source: Dr. You Lai