Rework is imminent, here’s what you need to know besides masks

The pandemic is ruthless. I believe this is the strongest feeling in everyone’s heart during the 2020 Spring Festival. During the long and painful "holiday", faced with more than 40,000 people infected by the new coronavirus, many people still have to go out. Therefore, masks have become more popular than red envelopes during the Spring Festival this year. They are also the most effective, direct and economical anti-virus supplies currently officially confirmed. But do you really understand masks? How to use the mask? In addition, what have car companies done during the epidemic? What rumors about the epidemic should you not believe? Let’s chat with you in an article. ?

·PART 1? Not all masks work!

In the medical field, masks have clear classifications, and different models correspond to different levels of protection. One of the hot words during the Spring Festival this year is "N95". In fact, both N95 and KN95 belong to the medical category. Strictly speaking, only doctors close to the source of the disease will wear them. Among them, KN95 is specified in accordance with my country's standards, and its filtration efficiency for non-oily particles above 0.0075 microns is greater than 95%. N95 refers to the American NIOSH dust mask standard, and its filtration effect is no different from KN95.

In addition to these two types, the most widely circulated on the market is a thin medical mask, and many people have no confidence in its anti-virus effect. In fact, experts recommend that there is no problem for ordinary people to wear this kind of mask when traveling on a daily basis. The table below details the protective effects of different levels of masks:

Among the five types of masks listed above, it must be noted that cotton masks are not very effective in protecting against coronavirus! In fact, this kind of cotton mask is more effective in preventing wind, keeping warm, and isolating dust. Not to mention viruses and droplets, even PM2.5 can’t help! Therefore, please be sure to stop using the cotton masks in your hands, and when you encounter others wearing them, you can also kindly remind them.

Everyone can choose the appropriate mask model based on their community environment and travel conditions. If you are only active in the community, and the flow of people around is not large and the stay is not long, then thin ordinary medical masks and surgical masks are enough. Try to choose a surgical mask because its outer layer has a water-blocking layer, which can prevent droplets from penetrating into the mask.

N95 masks are divided into two types: with a breathing valve and without a breathing valve. The filtration effect is the same. Obviously, the comfort with a breathing valve is better. If you are going to take the subway, bus, or move in a square or room with a large flow of people, and the activity lasts for a long time, it is recommended to wear an N95 mask.

·PART 2? Can masks be reused?

Under normal circumstances, N95 level masks can be reused after disinfection and cleaning. However, under the current severe epidemic situation, it is recommended that everyone replace them regularly. Let’s talk about them one by one from low level to high level.

For ordinary medical masks and shell masks, these are single-use items. In other words, if you go downstairs to buy groceries and get home, it’s best not to use this mask again. Don’t even think about such a beautiful thing as washing and drying! The filter layer and water-blocking layer of this type of mask have very limited strength, and are likely to rot as soon as they are washed, or suffer minor damage, causing the entire mask to fail.

For N95 masks, first of all, multiple people must not use one in turn, and secondly, they cannot be replaced if it breaks. Let’s take a look at some characteristics of the new coronavirus first:

1. This virus is mainly spread through body fluids and contact;

2. Coronavirus likes wetness but not dryness, and will stay on dry surfaces Its infectivity only lasts for 5 minutes;

3. Coronavirus is afraid of heat but not cold. It can live well at -25℃, but if it stays in an environment above 58℃ for 30 minutes, it will be life-threatening. No more.

It is winter, which provides a good temperature for the coronavirus to spread, but where does the moisture come from? At this time, don’t forget that the biggest “humidifier” around us is ourselves.

Even if the human body breathes normally, the humidity of the exhaled air is relatively high.

Think about it, in winter, when you wear a mask, the exhaled air will stay inside the mask for a short time. At this time, it is easier for the high-humidity air inside the mask to condense on the mask, which is equivalent to giving the coronavirus a chance. Survival provides a good place!

Fortunately, for N95 masks, their good water barrier properties ensure that the moisture we exhale inside the mask will not come into contact with the outside world. However, we still need to pay attention. If water vapor condenses inside the N95 mask when wearing it, be sure to take off the mask and clean it before using it again when you get home. Never use alcohol-based disinfectants to clean masks, because alcohol is a good solvent for organic matter. It will destroy the water-blocking layer in the mask and make the mask as useless as a sieve!

In addition, everyone should also pay attention to one thing, that is, due to its high airtightness, experts do not recommend wearing N95 masks for long periods of time. Generally speaking, N95 masks should not be worn for more than 4 hours at a time, otherwise it will cause lung damage and may cause hidden dangers such as emphysema.

·PART 3? Masks are in short supply, so don’t rush to choose one

Due to the shortage of masks, many people have begun to look for purchase channels online and on WeChat. Everyone must not buy indiscriminately or indiscriminately because of the shortage of masks. If you buy substandard, fake and shoddy masks, due to their uncontrolled production process and unknown raw materials, the harm may be greater than not wearing a mask! In recent days, state agencies have strengthened monitoring of the production and sales of masks, and severely investigated and dealt with small workshops that produce fake masks in order to make money during extraordinary times.

When purchasing masks, it is recommended that everyone purchase masks from the following sources:

1. Masks sold at designated locations in hospitals and regular pharmacies;

2. Large e-commerce companies Masks from the platform’s self-operated stores, or officially authorized stores of brands such as 3M;

3. Masks donated by third parties with clear supply sources.

In addition, I would like to share with you some methods to identify real and fake masks:

1. Look at the letters. The authentic 3M uses bold fonts and the fonts are relatively close; fake and shoddy products use bold fonts. I just found a random font and printed it.

2. Smell the smell. The genuine mask has no odor, but has a faint scent of activated carbon, and the rubber belt has no odor. Counterfeit masks are often accompanied by an unpleasant odor due to rough workmanship and cut corners.

3. Try not to buy imported masks. In order to avoid identification, some businesses deliberately make imported packaging. It is difficult to distinguish between genuine and fake masks. Therefore, to be on the safe side, everyone should try to buy domestic products. ?

·PART 4? If the mask is not worn well, what is the difference between wearing it and not wearing it? !

Even if we have genuine masks, we know when to wear them, but will you really wear them? In addition, many people have recently purchased KF94 masks from South Korea. What is its origin? What about the level of protection? Xiao Shuang, our beautiful host from Yiche, has recorded a detailed video explanation for you, giving you step-by-step guidance on the movements. Here is a hands-on guide for you, including tips on how to solve the problem of ear masks being strangled:

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·PART 5? Returning to work, what should you pay attention to when traveling?

Currently, most companies are returning to work, and you don’t know if you miss going to work if you are tired at home. Returning to work will undoubtedly increase the time and frequency of everyone’s contact with the outside world. Below we will summarize the key points of travel from the three environments of self-driving, public transportation, and offices. We have extracted the most essential parts. Please keep them in mind as needed.

Things to note when traveling by car

1. How to use air conditioning?

The air-conditioning filters of most family cars cannot block the aerosol transmission of viruses. Therefore, when driving on roads with many people and dense vehicles, it is best to turn the air conditioner to internal circulation and close the windows. . When driving on high-speed or sparsely populated roads, you can use external circulation or open a small crack in the window to ventilate the cabin. It is not recommended to wear a mask for a long time in the car because it may cause suffocation and affect driving concentration, which is a certain safety hazard.

2. Vehicle Disinfection

Disinfect your car every day and take care of key parts, including interior and exterior door handles, seats where people have been sitting, driver's seat, gear handle, etc. Button area, steering wheel, etc.

Do not use 75% alcohol to wipe the interior directly, as corrosion will occur. It is recommended to use 84 disinfectant or Dettol diluted at 1:32.

If your car uses fabric seats, do not use 84 disinfectant as it may bleach and stain it. It is best to use 75% alcohol to wipe.

3. How to park?

If possible, it is best to park in an open outdoor space. Ultraviolet rays in the sun have a certain inactivation effect on viruses. In addition, heating up the light inside the car and keeping the car dry will also help the virus lose its infectivity.

Precautions for public transportation

1. The general principle is: try to avoid contact with external objects.

2. Make sure to wear a mask and gloves throughout the process. Try to secure two sets of outerwear/shoes and pants and use them alternately. Wipe and disinfect the outermost layer of clothing and shoes every day when you go home. Don’t forget your mobile phone and headphones.

3. When taking express trains, special cars, or taxis, do not use any complimentary items on the car, such as tissue paper or mineral water. Try to avoid hand-to-hand contact with the driver and try to avoid paying in cash.

4. Carry a small bottle of spray alcohol with you. After direct physical contact with the outside world, if there is any doubt, please understand and spray the corresponding area.

5. N95 masks cannot be worn continuously for more than 4 hours, and ordinary medical masks must be replaced at one time.

Office Notes

1. Conduct a comprehensive inventory of your belongings, throw away unnecessary items, and reduce the number of items on the desktop.

2. Carry out comprehensive alcohol wipe and disinfection of desktops, seats, partitions, and office supplies. If there are other people’s belongings at the workstation, they must be returned and cannot be left behind.

3. If the office density is high and the workstation area is small, try to wear an ordinary medical mask when working to avoid the spread of droplets. Be sure to wear a mask at all times during the meeting.

4. Never use toilet paper in the bathroom, bring your own. In principle, do not use any public facilities, such as water dispensers and microwave ovens.

5. Keep 1 meter away when talking to colleagues, and try not to eat snacks such as puffed foods with large surface areas that are easily contaminated by droplets.

·PART 6? Do you believe these rumors?

Every time there is a major or minor disaster, the most annoying thing is the rumors flying around. Today's rumors are no different than usual. They are often both "professional" and intimidating, leaving everyone unaware of whether they are true or false. Below we will break down the unfounded rumors that are currently popular one by one. You must not be gullible and suffer losses.

Rumor 1 |? Gargling with salt water to prevent disease

Truth: Gargling with salt water is good for cleaning the mouth and throat, but the new coronavirus infects the respiratory tract. Salt water can only clean the mouth and throat. Part of the esophagus, how to prevent coronavirus?

There are currently no research results showing that salt water has a killing effect on the new coronavirus.

Rumor 2 |? Wearing more layers of masks can prevent viruses

Truth: Wearing one mask correctly is enough, and N95 masks are not the only option. Ordinary medical surgical masks can also block the virus. Droplet spread.

Rumor 3 |? The antiviral drug Remdesivir has been "effective" in Wuhan?

Internet rumors: Remdesivir has "shown its power" in Wuhan and has been "all effective" in more than 700 patients in a short period of time.

The truth: "The clinical study just started today, how can we know the results?" On February 6, Professor Cao Bin, the person in charge of the clinical trial of the drug and the deputy director of the China-Japan Friendship Hospital, said that this statement is not true. Reality.

Rumor 4 | Smoking and drinking can prevent infection with the new coronavirus

Truth: 75% alcohol can kill the virus. You can use alcohol to wipe your mobile phone and hands to disinfect them. Regular disinfection of daily contact areas is okay, but the core is wiping, not contact with the digestive tract and stomach, so drinking is useless, and smoking is even more useless! Don’t treat your body like a pickle!

Rumor 5 |? Drinking isatis root and smoked vinegar can prevent the new coronavirus

Truth: Isatis root can be used to prevent or assist in the treatment of wind-heat colds and other diseases, that is, the common cold, but It does not prevent the new coronavirus!

The concentration of acetic acid contained in fumigated vinegar is very low and cannot disinfect at all.

Rumor 6 |? About the recording of a patient dying without fever

Truth: Recently, it is said that experts’ recordings about the new coronavirus have been widely circulated on the Internet, saying that some patients died from the beginning to the end No "fever" occurred, and then died directly...

Rumor 7 |? There is a Chinese medicine formula that can prevent pneumonia