Legal analysis: 1. Remove the wind-proof thermal insulation curtain set at the entrance of medical institutions, and strengthen the ventilation of public areas such as outpatient and emergency departments and wards. 2. Strengthen the management of ventilation system. Those who use central air conditioning should turn off the return air and increase the fresh air. When there are suspected or confirmed cases in COVID-19, the central ventilation system should be stopped immediately and terminal disinfection should be carried out, and alternative safety measures should be taken to ensure the room temperature. 3. Medical institutions should strengthen the ventilation of all subjects and rooms. Medical staff should guide inpatients to open windows and ventilate as appropriate to keep the air fresh. 4. Strictly implement disinfection specifications. Strengthen the cleaning and disinfection of fever clinics, emergency rooms, waiting halls, toilets, corridors, elevators and other public areas and the terminal disinfection of wards.

Legal basis: People's Republic of China (PRC) Law on the Prevention and Control of Infectious Diseases.

Article 1 This Law is formulated for the purpose of preventing, controlling and eliminating the occurrence and prevalence of infectious diseases and safeguarding human health and public health.

Article 2 The State implements the policy of putting prevention first, combining prevention with control, classified management, relying on science and relying on the masses in the prevention and control of infectious diseases.