How do you know Wear a Mask Correctly?

After the outbreak of the new coronavirus infection, many people chose to wear masks to go out.

But are you really right? In fact, there is still a lot of knowledge. What kind of mask can prevent infection?

How to wear a mask correctly? This knowledge must be understood before you wear a mask.

Medical Surgical Masks

Knowledge point one

What are the common types of masks?

There are several common masks:

Disposable Surgical Mask, N95 type mask

Disposable mask

To some extent, it can prevent respiratory infections, but not haze.

There are three layers of medical surgical masks, which are waterproof layer, filter layer and comfort layer from the outside to the inside. The comfort layer is a layer of non-woven fabric. When wearing, the white non-woven fabric faces inward, the blue waterproof layer faces outward, and the side with the metal sheet faces up. Don't wear it. The rubber band hangs on both ears and pinches the metal sheet Fit the nose and smooth the cheeks so that there is no gap between the mask and the face.

N95 type mask

It can effectively prevent respiratory infections and prevent haze.

The N95 mask is one of the nine anti-particulate masks certified by NIOSH. "N" means particles that are not suitable for oiliness; "95" means that the filtration efficiency reaches 95% under the test conditions specified in the NIOSH standard.

N95 is not a specific product name. As long as it conforms to the N95 standard and has passed the NIOSH review, the product can be called "N95 mask".

The biggest feature of the N95 mask is that it can prevent droplet infections caused by patients' body fluids or blood splashes. The size of the droplets is 1 to 5 microns in diameter. OSHA stipulates that for medical institutions, medical personnel exposed to tuberculosis bacteria must wear masks above the N95 standard.

Compared with medical surgical masks, N95 masks are better sealed. When choosing an N95 mask, try to choose an N95 mask without a breathing valve.

What type of mask to wear?

For the purpose of self-protection and reducing the risk of respiratory tract infections, it is okay to wear medical surgical masks or N95 type masks.

If you are going to a general open-air public place and are not in contact with the patient, you can choose to wear a medical surgical mask without overprotection, but if you will contact patients with suspected respiratory infections, you must wear a N95 mask.

Knowledge point two

How to wear a mask correctly? 

4 suggestions:

1. Cover your mouth and nose carefully with a mask and fasten it to minimize the gap between the face and the mask;

2. Avoid touching the mask when using it-after touching the used mask, for example, when removing the mask, wash your hands with soapy water or alcohol hand sanitizer;

3. After the mask is wet or contaminated with moisture, put on a new clean and dry mask;

4. Do not reuse disposable masks. Disposable masks should be discarded after each use and disposed of immediately after removal.

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