Wear Facemask Correctly To Prevent Swine Flu As Far As Possible

Recently facemasks become best sellers and there're more and more people on the street wearing a facemask. But the experts point out that facemasks can isolate virus and prevent diseases only when they're worn in the right way.

The Use Of Facemask

Generally speaking, the facemask must have a suitable size and be worn in the right way before if can have an effect. There're usually 2 kinds of facemasks sold in the market, one is rectangular and the other cup-shaped. The rectangular facemask must be made of at least three layers to have the protection function.

One should first press the iron wire in the facemask against the bridge of the nose, and then spread it out along the bridge of the nose in order to make it work. The children can wear rectangular surgery facemask, because it does not have the fixed shape. The mask can cover the children's face closely if tied up well.

The cup-shaped facemask must guarantee that it covers both the nose and mouth tightly enough after it is put on. It'll have an effect when the air you breathe out does not leak. While wearing the cup-shaped facemask, you can test if air escapes from both sides by blowing with both hands covering the mask. If the facemask cannot cover tightly, you should adjust it and put it on again.

Do Not Wear Facemask Too Long

Based on human beings' physiological structure, the blood circulation of mucous membrane in the nasal cavity is very active, and the channel in the nasal cavity is also very winding. Nasal hair builds a filtration“barrier”. When air comes in the nostril, it forms a swirl in the winding channel, enabling the air in the nasal cavity to be heated. Someone tested to indicate that the cold air of 7 degrees Celsius below zero will be heated to 28.8 degrees Celsius after it comes to the lungs from the nasal cavity.

This is very close to human body's temperature. If someone wears the facemask for a long time, it will cause the nose mucous membrane to be frail and lose the original physiological function of the nasal cavity. Therefore, the facemask cannot be worn for too long. It can only be worn in special surroundings, for example, in places where there're a lot of people and lack of ventilation.

Certainly, one needs to wear facemask when walking in the open air to resist sandstorm and coldness, or staying in the environment where the air is polluted. But do not wear it too long. In addition, one should wear a facemask if he goes to public places where there might be a lot of pathogenic bacteria in the flu pandemic season. Wearing facemasks is only a method to prevent respiratory infectious disease. What's more important is that one should maintain good habits and customs.