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Mask recommendations

There are many kinds of masks, and their protective effects are also different. At present, the most commonly used by the public are disposable medical masks and disposable medical surgical masks. Disposable medical masks can be used by the public in non-person-intensive public places Use, and medical surgical masks have better filtering performance. It is generally recommended to wear suspected cases, public transportation personnel, taxi driver sanitation workers, public service personnel, etc. during the post, no matter what kind of masks, it is not recommended that you pass Reuse after killing.

Regardless of whether it is a disposable medical mask or a medical surgical mask, the main materials of these masks are non-woven fabrics and paper. After they are made, they have a certain filter protection for dust and viruses according to different standards, but if some friends imagine After being soaked in disinfectant, then soaked in hot water at 100°C, and then dried, this approach can indeed ensure that if it is contaminated with new coronavirus or most other viruses and pathogenic bacteria, but it needs to be considered Yes, in the case of disinfectant soaking and boiling water disinfection, the safety and filtration performance of the mask will be affected. When it comes to safety, the main problem is the residual disinfectant. The disinfectant is disinfected by soaking the disinfectant. On the one hand, the disinfectant may remain on the surface of the mask and cannot be effectively and completely removed. When it is worn, it may cause skin or respiratory mucosa. Certainly irritating; of course, this is not the biggest risk. The biggest risk is that the structure of the non-woven fabric and paper will be destroyed during the immersion process of disinfectant and 100°C boiling water, which will affect the filtering performance of the mask. The filtration performance of disposable masks with a certain blocking effect will be destroyed and will not play their due role. If the masks treated in this way are used again, the effect cannot be guaranteed. Since the protective effect of the mask cannot be guaranteed, the reuse of such treatments will not benefit more than wasting disinfectant and hot water.

In the current situation of shortage of disposable masks, for everyone, it is more important to reduce the amount of going out than to find ways to reuse disposable masks. If you do not need to purchase the necessary daily necessities, try not to If you go out one less time, you will use one less mask. In addition, the “Guidelines on the Protection of People with Different Coronary Infection Risks and the Use of New Coronavirus Pneumonia Masks” issued by the Health and Health Commission also pointed out that in non-epidemic areas Open and ventilated places do not need to wear masks. When entering crowded areas or closed public places, you need to wear masks. This suggestion is also worthy of your reference, one of the principles that can save the use of masks.

  In the case of tight masks, it is recommended that disposable medical masks or surgical masks can be sterilized in the following ways and then used again:

One is ultraviolet disinfection. If you have an ultraviolet disinfection lamp in your home, you can fully disinfect the used disposable mask under the ultraviolet disinfection lamp and use it again. You need to pay attention to the harmful effects of ultraviolet rays on the human body. Disinfect the lamp area.

The second is dry heat sterilization. The new coronavirus can be inactivated by heating at 56℃ for more than 30 minutes. If you have a dryer friend at home, you can also consider drying the disposable mask at 60-70℃ for more than half an hour. For reuse.

A final reminder: the above two methods can effectively prevent the filtering performance of the mask from being damaged, but it is only a stopgap measure. If it can be used for one time, the mask should still be used as one time, and repeated use should be avoided as much as possible. . I believe that with the continuous strengthening of prevention and control awareness and the continuous strengthening of epidemic control, this epidemic will eventually pass, and spring will eventually come!

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