Don't change the mask once! Teach you 4 tricks to use masks reasonably.

"Did you buy a mask?"

It has also become the daily greeting of WeChat.

Facing the shortage of mask resources

Personal protection cannot be ignored.

It is necessary to use masks reasonably.

Can't open source, can cut expenditure!

It is reasonable to wear a mask when going out!

The use principle of the mask is as follows

Don't use blindly, don't overprotect!

● You don't need to wear masks in open and ventilated places in non-epidemic areas, and you need to wear masks when entering crowded or closed public places.

● In areas with high epidemic incidence, it is recommended to wear disposable medical masks in open and ventilated places; When entering crowded or closed public places, wear medical surgical masks or particle protection masks.

● When going to a hospital with suspected symptoms, it is recommended to wear a particulate matter protective mask or a medical protective mask without an exhalation valve; Patients with basic respiratory diseases need to use protective masks under the guidance of doctors; Very young infants can't wear masks, which is easy to cause suffocation.

It should be reminded that cotton masks, sponge masks and activated carbon masks have no protective effect on preventing virus infection.

You don't have to choose N95 mask!

In recent years, with the spread of the epidemic, people's awareness of protection has gradually increased, and many people insist on purchasing N95 masks for effective protection. Wearing a mask is very necessary personal protection. Is it necessary to choose N95?

Head of the high-level expert group of the National Health Commission.

Academician Zhong Nanshan reminded

Ordinary people don't have to wear N95 masks in their daily lives. General medical protective masks can prevent most droplets with viruses from entering the respiratory tract, which is enough in public places. N95 mask is used when facing patients at close range. For example, medical staff need to wear N95 masks when treating patients every day.

The Guide to the Use of Masks for Preventing Pneumonia in novel coronavirus compiled by experts organized by the Health and Health Commission defines the users of different types of masks:

● Disposable medical masks: It is recommended that the public use them in public places where people are not crowded.

● Medical surgical mask: The protective effect is better than disposable medical mask. It is recommended for suspected cases, drivers of public transport companies, taxi drivers, sanitation workers and service personnel in public places.

● KN95/N95 and above particulate matter protective masks: The protective effect is better than medical surgical masks and disposable medical masks. It is recommended for field investigation, sampling and testing personnel, and can also be worn by the public in highly crowded places or closed public places.

● Medical protective mask: It is recommended that medical staff in fever clinics, isolation wards and confirmed patients wear it during transportation.

In other words, we don't have to choose N95 masks, but we should choose them reasonably according to our actual protection needs.

Ordinary people don't need to change their masks!

Feng Zijian, deputy director of the China Center for Disease Control and Prevention, said that people don't have to change their masks at any time. Medical staff have strict rules about how often to change masks. Every time I care for and touch patients, I have to change my mask as soon as I come out, and then I have to put in a new mask. This is stipulated, and so is the time to wear a mask.

At present, there is no clear conclusion about the best wearing time of masks, and China has not yet made relevant regulations on the use time of masks. According to the National Institute of Occupational Safety and Health (NIOSH), the N95 mask can be reused as long as it "maintains its structural and functional integrity and the filter material is not physically damaged or polluted".

The Centers for Disease Control and Prevention (CDC) pointed out that a study found that masks can capture 99.8% of exposed viruses, that is, once the virus touches the mask, even if people touch the mask again, the virus is unlikely to fall off the mask, and breathing through the mask will not make the virus fall off the mask fiber. Although 99.8% is not 100%, the efficiency of the mask itself to filter air is only 95%, and 95% of the filtering effect can be considered as sufficient protection.

Then, should the mask be disinfected before use? The answer is no disinfection. But when putting on and taking off the mask, it is best to use clean hands, gloves or paper towels. This can make the mask basically free from pollution, because the main risk of mask pollution is hands rather than air. Trying to sterilize the mask may destroy its "structural and functional integrity" and it is best not to do so.

Used masks should be treated in a standardized way!

There are many ways to kill pathogenic microorganisms, such as pressure steam, ultraviolet light, high temperature, medical alcohol, chlorine (bromine) disinfectant and so on. We should choose a simple, efficient and safe method.

& gt& gt In normal life

The masks worn by healthy people do not have the risk of novel coronavirus transmission, so they are usually replaced when the masks are deformed, wet or dirty, resulting in a decline in protective performance. Masks used by healthy people can be treated according to the requirements of domestic waste classification.

Masks worn by suspected cases or confirmed patients shall not be discarded at will, and shall be regarded as medical waste, which shall be treated in strict accordance with relevant procedures of medical waste, and shall not enter the circulation market.

& gt& gt When I was in a medical institution

Whether seeking medical advice, visiting patients, or interviewing and investigating, masks used by medical institutions should be directly put into medical waste garbage bags. These masks, as medical waste, will be treated by professional treatment institutions.

After processing the mask,

Remember hand hygiene!

Special reminder

Boil, burn, cut and throw.

None of them are desirable!

Comprehensively compiled from WeChat official account Health China, China CDC Trend, People's Daily Online, Popular Science China, IPEM.