" as="other"> Guideline for correctly wearing mask - MyBioGate Global COVID-19 Resources Platform

Published: March 18, 2020 From China NHC(National Health Commission)

Correctly wearing the mask can prevent COVID-19, season flu and other respiratory infectious diseases, helpful for protecting yourself and the health of the public. In the battle against COVID-19 outbreak, the Guidelines are developed to guide the public to correctly wear masks, effectively control the epidemic and protect the health of the public.

1. Common people

    1. 1)   Home or outdoor, with no crowd, and well ventilated

      Protection Suggestion: Not need to wear the mask.

      2)   At crowded places, e.g. office, shopping, restaurant, meeting room, workshop, etc.; or taking the box-type lift, public transport means, etc.

      Protection Suggestion: When going to the medium/low risk areas, prepare   masks (disposable medical mask or medical surgical mask), and wear the mask when coming in close contact with others (less than 1m). When in high risk area, wear the disposable medical mask.

      3)   Having the cold symptoms as cough, sneezing, etc.

      Protection Suggestion: wear the disposable medical mask or medical surgical mask.

      4) Living with those who are in home quarantine or discharged from hospital after recovery

      Protection Suggestion: wear the disposable medical mask or medical surgical mask.

    2. Persons at special locations

      1. 1) Hospital, bus station, railway station, metro station, airport, supermarket, restaurant, public transport means, entrance/exit of community or institution, etc.

        Protection Suggestion: The staff shall wear the disposable medical mask or medical surgical mask, when at  medium or low risk places; and wear the medical surgical mask or protection mask of KN95/N95 or higher level.

        2)  Prison, elderly nursing home, charity house, psychiatric health care institution, and classroom in the school, dormitory of construction site and other crowded places

        Protection Suggestion: In the medium or low risk place, take with you  masks (disposable medical mask or medical surgical mask), and wear the mask when in the crowded place or coming in close contact with others (less than 1m); The staff shall wear medical surgical mask or protection mask of KN95/N95 or higher level; and other people shall wear disposable medical mask.

      3. Key personnel

        1. Suspected, confirmed and asymptomatic novel coronavirus infected patients; those in close contact with COVID-19 patient and those entering China from foreign countries (from entry to the end of quarantine).

          Protection Suggestion: wear the medical surgical mask or protection mask without expiratory valve of KN95/N95 or higher level.

        4. Staff under occupational exposure

          1. 1)   Medical staff in common outpatient, ward, etc. Emergency medical staff of medical institutions in low risk area; administrative staff, police, security guard, cleaning staff, etc. related to epidemic prevention and control.

            Protection Suggestion: wear medical surgical mask.

            2)   Staff working in the ward or ICU for confirmed or suspected COVID-19 patients; medical staff of the fever outpatient in designated medical institutions; medical staff of the emergency in medical institutions in medium or high risk areas; staff for epidemiological survey, laboratory test and environment disinfection; staff for transferring confirmed or suspected patients.

            Protection Suggestion: wear the medical protection mask.

            3) Operators for collecting respiratory tract samples; staff for tracheotomy, endotracheal Intubation, tracheoscopy, sputum aspiration, cardiopulmonary resuscitation (CPR), or lung transplantation or pathoanatomy of COVID-19 patients.

            Protection Suggestion: wear hood type (or full face) powered air-purifying respirator, or semi-face powered air-purifying respirator plus goggle or full-face screen; both types of respirators will use P100 particle proof filter element which is not for repeated use. Use the protection devices after disinfection.

          5. Precautions

            1. 1) Wash hands before putting on and after taking off the respiratory protection equipment, including the mask and face cover;

              2) When wearing the mask, correctly identify the front and back, and upside and downside, ensure the mask covers the mouth and nose, and adjust the nose rib till fit closely to the face;

              3) After putting on the mask, do not touch the inside or outside, and take off the mask by moving off the bands on both sides;

              4) Wearing multiple masks will not effectively increase the protection effect, instead it increases the breathing resistance, and may damage the tightness;

              5) There is no evidence showing the effectiveness of cleaning, disinfection of the mask and other measures.

              6) Disposable medical mask and medical surgical mask are for limited time of use, totally not more than 8 hours. The staff under occupational exposure shall not use any mask for more than 4 hours, and not use it repeatedly.

            Link : http://www.nhc.gov.cn/jkj/s3577/202003/0a472cc09e744144883db6a74fe6e760.shtml