[Video] Interim Guidebook to Using Masks to Prevent Covid-19 Spread

Authors: Go Chengdu


Click the video on general advice on the use of masks.
I. Do masks offer prevention from the novel coronavirus?
Masks are very important to protect people from being infected with respiratory infectious diseases and can lower the risk of exposure to the novel coronavirus.
Masks can not only retain the liquid droplets released from infected people, decrease the amount and speed of their droplets, but also prevent wearers from inhaling aerosols with viruses.
II. General advice on the use of masks
Avoid mindless use and over-protection.
You don't need to wear a mask in an open space.
It's necessary to wear a mask in a crowded or an isolated place.
It is recommended to wear a disposable medical mask in places which are not endemic areas.
It is recommended to wear a surgical mask in highly infected areas.
Cotton masks don't work for preventing the virus.
Patients with underlying respiratory diseases should use masks under the guidance of doctors.
Infants and young children are not allowed to wear masks for fear of being suffocated.
III. Types of masks and what masks to wear
A. Disposable medical mask
Single-use surgical masks are required for the general public and staff in general medical facilities.
B. Surgical mask
A surgical mask is more effective than a disposable medical mask to prevent the virus. It is recommended for suspected cases of the virus, drivers and passengers of public transportation vehicles, taxi drivers, sanitation workers and public services personnel to wear the mask during work.
Surgical masks can protect surgical wounds of patients from being infected during surgeries. And it is able to help reduce the risk of splashes or sprays of blood or body fluids for medical staff.
C. Masks rated N95 or higher in accordance with GB2626
They are more effective than disposable medical masks and surgical masks, and it is recommended for suspected cases of the virus to use such masks.
People without suspected infection of the virus can use such a mask in crowded places and for smog protection.
They can be a supplement for medical protection when medical protective masks are insufficient.
However, it is not recommended to use them in places with high humidity or the possibility of body fluid droplets like an operation room.
D. Medical protective mask
It is recommended for medical staff working in fever clinics and isolation wards, and transporting confirmed cases of the virus to use medical protective masks.
Frequent use of the mask is not recommended for the general public, especially when medical resources are in short supply. Please save it for key medical staff.
E. Protective mask (with P100 particulate filter)
It is more effective than a medical protective mask to prevent the virus.
IV. Can a mask with an exhalation be used to prevent the virus?
The exhalation valve is one-way to prevent mask wearers from inhaling droplets with the virus.
But if suspected and confirmed cases of the virus wear this kind of mask, they will become a mobile source of infection.
Because an opening exhalation valve may discharge droplets with the virus from patients.
V. How to wear a surgical mask correctly?
Please follow the steps below:
A. Make the side with the metal piece (nose strip) upward and the colored side face outwards and the side with folds downward.
B. Pull the bottom of the mask over your nose, mouth and chin.
C. Mold or pinch the nose strip to conform to the shape of your nose.
D. Adjust the mask to make it cover your face perfectly.
VI. How to dispose of a mask?
Masks used by healthy people pose no risk of spreading the novel coronavirus.
It is recommended to replace your mask with a new one every four hours, because it is damp or contaminated by your secretions and gets ineffective in prevention of the virus.
Used masks must be properly disposed of in accordance with relevant standards for waste classification.
Masks used by suspected or confirmed cases of the virus must be disposed of as medical waste and can't be discarded carelessly.
The disposal of medical waste is under strict management and supervision, and all medical waste is strictly prohibited from being reused and sold on the market.
VII. Can masks be reused after cleaning and sterilization?
No, they can't. Masks are not allowed to use repeatedly after cleaning, heating or sterilization.
Because they become ineffective in virus protection and air tightness.
VIII. Can children wear adult masks?
Children are recommended to wear KN95 masks which meet relevant stipulations of GB2626-2006 and are labeled as particulate respirators for kids or teenagers.
They are able to filter particulates effectively.
Attentions when children use masks:
A. Children may not use respiratory protection products properly.
B. Some children may not be able to stop the use by themselves when feeling uncomfortable.
C. Parents should help their children to read and understand relevant instructions for use before their kids put on the masks.
D. Children are not recommended to wear adult masks with sufficiently strong tightness.
Because adult masks don't fit children's faces well, which are relatively small.
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