Guidelines for wearing face masks for public science

Scientific wearing masks has a preventive effect on respiratory tract infections such as New Coronary Pneumonia and Influenza, which not only protects oneself but also benefits public health. At present, under the situation of combating the new coronary pneumonia epidemic, in order to guide the public to wear face masks scientifically to effectively prevent and control the epidemic and protect public health, the following guidelines are specially proposed.

1. The general public

(1) At home, outdoors, without people gathering, well ventilated.

Proposal for protection: don't wear a face mask.

(2) In places where people are dense, such as offices, shopping, restaurants, meeting rooms, workshops, etc .; or take a van elevator, public transportation, etc.

Proposal for protection: In medium and low-risk areas, spare masks (disposable medical masks or medical surgical masks) should be worn with you, and wear masks when close contact with other people (less than or equal to 1 meter) In high-risk areas, wear disposable medical masks.

(3) For those who have cold symptoms such as coughing or sneezing.

Proposal for protection: Wear disposable medical masks or medical surgical masks.

(4) For those who live in isolation from their homes and who are discharged from the hospital.

Proposal for protection: Wear disposable medical masks or medical surgical masks.

2. Personnel in specific places

(1) It is located in places with densely populated hospitals, bus stations, train stations, subway stations, airports, supermarkets, restaurants, public transportation, and the import and export of communities and units.

Proposal for protection: In medium and low-risk areas, workers wear disposable medical masks or medical surgical masks. In high-risk areas, workers wear medical surgical masks or protective masks that meet KN95 / N95 and above.

(2) In crowded places such as prisons, nursing homes, welfare homes, mental health medical institutions, school classrooms, and construction site dormitories.

Proposal for protection: In medium and low-risk areas, spare masks (disposable medical masks or medical surgical masks) should be worn on a daily basis. Wear masks when people gather or make close contact with other people (less than or equal to 1 meter). In high-risk areas, workers wear medical surgical masks or protective masks that meet KN95 / N95 and above; other personnel wear disposable medical masks.

3. Key personnel

Suspected cases, confirmed cases and asymptomatic infections of new coronavirus pneumonia; close contacts of new coronavirus pneumonia; entry personnel (from the beginning of entry to the end of isolation).

Proposal for protection: Wear a medical surgical mask or a protective mask conforming to KN95 / N95 and above without an exhalation valve.

4. Occupationally exposed personnel

(1) General outpatients, wards and other medical personnel; emergency medical personnel in medical institutions in low-risk areas; administrative personnel, police, security, cleaning, etc. involved in epidemic prevention and control.

Proposal for protection: Wear medical surgical mask.

(2) Personnel working in the wards of patients with confirmed or suspected cases of new-type coronavirus pneumonia, ICU; medical staff in hot spots of designated medical institutions; medical staff in emergency departments of medical institutions in middle and high-risk areas; epidemiological investigations and experiments Laboratory testing, environmental disinfection personnel; transport confirmed diagnosis and suspected case personnel.

Proposal for protection: Wear medical protective mask.

(3) Operators engaged in the collection of respiratory specimens; staff performing tracheotomy, tracheal intubation, tracheoscopy, sputum suction, cardiopulmonary resuscitation in patients with new coronavirus pneumonia, or lung transplant surgery, pathological anatomy

Protection recommendations: hood type (or full-type) power supply filter breathing protector, or half-face type power supply filter breathing protector with goggles or full screen; both types of breathing protectors need to use P100 anti-particles Filter element, filter element can not be reused, use protective equipment after disinfection.

V. Precautions for use

(1) Respiratory protective equipment including masks and masks should wash hands before wearing and after taking off.

(2) When wearing the mask, pay attention to the front, back, up and down. The mask should cover the nose and mouth, and adjust the nose clip to fit the face.

(3) Avoid touching the inside and outside of the mask with your hands during wearing. You should remove the mask by removing the two ends of the cord.

(4) Wearing multiple masks can not effectively increase the protective effect, but increase the respiratory resistance and may damage the adhesion.

(5) There is no evidence to prove the effectiveness of various measures such as cleaning and disinfection of masks.

Disposable medical masks and medical surgical masks are limited-use, the cumulative use is not more than 8 hours. Occupationally exposed personnel use masks for no more than 4 hours, and they must not be reused.

At present, domestic and foreign epidemic prevention and control and the economic situation are undergoing new phase changes. The overseas epidemic situation is accelerating and spreading. The growth of the world economy and trade has been seriously affected. The pressure on China 's epidemic input continues to increase, and economic development, especially the recovery of the industrial chain, is facing new challenge.

At this time, precise policy is particularly important, how to achieve "precision"? It is necessary to adopt a differentiated strategy, adapt to the time and local conditions, and implement classification and classification.