Disinfect patients' excreta, vomit, body fluids and their polluted environment and articles at any time during hospitalization and transportation of cases or asymptomatic infected persons. For disinfection methods, please refer to the disinfection methods of common polluted objects. The disinfection products used shall meet the management requirements of the national health department. Spray disinfection in the presence of people is not recommended. Ventilation (including natural ventilation and mechanical ventilation) can be taken in places where patients are isolated to maintain indoor air circulation. Breathe 2-3 times a day for at least 30 minutes each time. Conditional medical institutions should place patients in negative pressure isolation wards, suspected cases should be isolated in single rooms, and confirmed cases can be placed in the same room. Non-negative pressure isolation ward should be well ventilated, which can exhaust air (including natural ventilation and mechanical ventilation), and can also use circulating air air disinfection machine for air disinfection. Ultraviolet rays can also be used to disinfect the air without people. When ultraviolet disinfection is used, the irradiation time can be appropriately extended to more than 65438 0 hours. Medical personnel and accompanying personnel should wash their hands and disinfect after the diagnosis, treatment and nursing work.