A few days ago, the Joint Prevention and Control Mechanism issued guidelines for the prevention of respiratory infectious diseases (2023 edition) for the public. There is a high incidence of respiratory infectious diseases in winter, and wearing masks scientifically is an effective measure to prevent such diseases. When should I wear a mask?How to choose a mask?Let's find out!The guidelines point out that the common pathogens of respiratory infectious diseases are new coronavirus, influenza virus, Mycoplasma pneumoniae, respiratory syncytial virus, etc., which are mainly transmitted through respiratory droplets, inhalation of aerosols with pathogens or close contact. Scientific wearing of masks is an effective measure to prevent respiratory infectious diseases. These guidelines are formulated to guide the public to wear masks scientifically and effectively protect public health. 
Situations or situations in which masks should be worn1.When a person infected with respiratory tract infectious diseases such as new coronavirus infection, influenza, Mycoplasma pneumoniae infection, and respiratory syncytial virus infection goes to indoor public places or is in close contact with others (less than 1 meter, the same below). 2.If you have symptoms of respiratory infections such as fever, cough, runny nose, sore throat, muscle aches, and fatigue, and go to indoor public places or have close contact with others. 3.When going to a medical institution for medical treatment, escort, escort, or visit. 4.During the period of high incidence of respiratory infectious diseases, when outsiders enter places where vulnerable groups such as elderly care institutions, social welfare institutions, and childcare institutions are concentrated. 5.During the period of high incidence of respiratory infectious diseases, public service personnel such as medical care, catering, cleaning, and security in key institutions such as elderly care institutions, social welfare institutions, childcare institutions, and schools work. Situations or scenarios where the wearing of a mask is recommended1.When using public transportation such as airplanes, trains, coaches, ships, subways, and buses during periods of high incidence of respiratory infections. 2.During the period of high incidence of respiratory infectious diseases, when entering supermarkets, theaters, passenger terminals, van elevators and other places with closed environments and dense crowds. 3.During the period of high incidence of respiratory infections, the elderly, people with chronic underlying diseases, pregnant women, etc., go to indoor public places. 4.During studying, living, or working with a person with symptoms Xi of a respiratory infectious disease. 
Common situations or scenarios where it is recommended not to wear a mask1.When doing physical activity. 2.When you are in an outdoor place such as an open-air plaza or park. 3.Infants and toddlers aged 3 years and under. Mask selection1.Patients with respiratory infections or those with symptoms of respiratory infections are recommended to wear protective masks with particulate matter such as N95 or KN95 (without breathing valves) or medical protective masks, and other personnel are recommended to wear disposable medical masks or medical surgical masks. 2.Children with respiratory infections or symptoms of respiratory infections are recommended to use children's protective masks, and other children are recommended to use children's sanitary masks. 3.Mask products should comply with relevant national standards or industry standards. 
Other considerations1.Individuals can choose whether to wear masks according to their own health conditions and needs, and pay attention to changing them in time. 2.Patients with cardiopulmonary dysfunction should wear masks under the guidance of a doctor. 3.Local disease control departments should promptly and dynamically release the epidemic situation of local respiratory infectious diseases, and remind the public to wear masks scientifically. This guideline will be dynamically optimized and adjusted according to the needs of the prevention and control of respiratory infectious diseases. All localities and departments may formulate local and industry-specific mask guidelines based on local and industry conditions. Edited |Yu Jiajie is responsible for the editor|Pang Zhenxu.
Issuance |Hu Zaoling Source |Released in Hangzhou.