The weather is getting colder, and many people may encounter this phenomenon: if someone around them has a cold and cough, it is likely that after a while, everyone in a room will have a cold and cough. The reason is simple, because the "lethality" of someone else's sneezing is several times stronger than you think.
The first is that it is extremely fast.
The speed of about one sneeze can be 160 km/h, which is almost the speed at which a Category 14 typhoon transits[1]. And the more lung capacity a person has, the farther the sneeze they hit travels.
The second is the long stay.
In the sneezing air, the virus stays there for about 10 minutes, and anyone who passes by is at risk of being infected by the virus [1].
Colds are mainly viral infections, including respiratory viruses such as rhinoviruses, adenoviruses, and respiratory syncytial viruses, which are mainly transmitted through respiratory droplets. Therefore, if you do not want to be infected, the most important thing is to cut off its transmission path.
Physical protection
Block the path of virus transmission
A sneeze is powerful, and it is important to take good protection. You can do a small test to see how much you know about protection.
Question One
When you want to sneeze
Here are 3 protection measures you think are correct:
When people with a cold sneeze and cough, they can use a handkerchief or use the elbow arm to cover the area, which is larger and allows the virus to adhere to fabrics such as handkerchiefs or clothes. In general, the time to survive on the fabric is also shorter than the time it floats in the air, which can effectively prevent droplets from floating in the air with the virus for a long distance.
If you just turn your head while sneezing, or cover your mouth with your hands, the virus on the nasal secretions will still drift into the air.
Question two
When you find someone around you who has a cold
Do you think the following scenarios are correct:
If someone around you has a cold, it is best to keep a distance of more than 1 meter from him, too close to enter the attack range of the virus. If you already have a cold, avoid intimate contact with children, the elderly or infirm people in your home, and it is best not to eat together.
Question three
When you have a cold or go to a crowded occasion
Is this the correct way to travel:
Ordinary dust masks cannot protect against viruses, and only surgical masks can effectively protect against viruses. Because the gap of the dust mask is relatively large, it can only prevent dust with a relatively large diameter, and the particles of the virus are very small, and there is a need for a smaller gap, and there must be a mask with a certain adsorption effect to filter out the virus, or rely on surgical masks to protect.
However, even if physical protection can isolate some virus invasion, it should not be taken lightly, after all, the virus can stay in the air for a long time.
Window ventilation is important
Drive away the virus that remains indoors
If you want to avoid being infected by people with colds as much as possible, you need to open windows frequently for ventilation, maintain fresh air, and avoid being in a closed environment for a long time.
There are a large number of negative ions in the fresh air, and when the window is opened for ventilation, it can improve the indoor air quality and inhibit the multiplication of viruses and bacteria.
If the indoor space is large, the temperature difference is small, or there is no wind weather, the window opening time can be appropriately extended. On the contrary, it can be appropriately shortened.
However, some friends may have to say: "Now the outdoor temperature is below zero, and the window will freeze to death", in this case, it is a little difficult to open the window for ventilation, but there is another solution, that is, to place an air purifier with disinfection and sterilization function.
Many ordinary air purifiers can only purify the air, and do not necessarily have the function of disinfection and sterilization. If you want to understand the disinfection and sterilization ability of the air purifier, you can focus on the disinfection and sterilization performance report issued by the product, or see whether the "National Disinfection Product Online Filing Information Service Platform" can query the filing.
In addition to the flu season, smog days, pollen season, and new house decoration can also use air purifiers to protect health.
As we all know, new house decoration or the purchase of new furniture, there may be a large amount of formaldehyde release, if you live in a space where formaldehyde exceeds the standard, it will cause harm to the human body. Pollen allergies are also common, with the prevalence of pollen allergies reaching about 5% to 10% worldwide, and diseases such as bronchial asthma, allergic rhinitis, and urticaria are closely related to pollen allergies [4].
It can be said that having a good air purifier can help everyone improve air quality and protect health in an all-round way.
This time we did our homework in advance and found an excellent air purifier , Honeywell Air Sanitizer. With it, you can remove most allergens, harmful bacteria and viruses, and give you a healthy and safe air.
Image source: Provided by the brand
28 viruses, bacteria and allergens
Reduce the risk of being infected
The cold temperature coupled with poor outdoor air conditions in winter, everyone is less willing to open the window for ventilation. But this will also make the indoor air more and more dirty, after eating the hot pot, the smell of hot pot will always drift away is a small matter, will endanger the health of the bacteria virus always hidden at home is a big thing.
At this time, you can invite out honeywell air disinfection machine, which has built-in UV sterilization lamps, which can achieve sterilization and disinfection effect through H13 high-efficiency HEPA + activated carbon composite filtration and purification cartridges and UV lamps, which can effectively remove 7 viruses, 14 bacteria, 7 allergens, a total of 28 virus bacterial allergens, and disinfect air purification. *
*Source of the report: Guangdong Microbial Analysis and Testing Center
The parameters are eye-catching and powerful
Suitable for multi-scenario use
As an enhanced version of the air purifier, Honeywell Air Sterilizers perform well in terms of parameters. Among them, the whole machine has efficient particulate matter and formaldehyde purification capacity, particulate matter CADR value (that is, clean air output) 560 m³ / h, formaldehyde CADR value of 350 m³ / h.
The CCM value of particulate matter (that is, the cumulative purification amount) is greater than 12000 mg, and the formaldehyde CCM is greater than 1500 mg, which has reached the highest grade in the new national standard of air purifiers "GB/T18801-2015" - P4 and F4 grades, and the service life is longer.
Friends who have just renovated their homes or bought new furniture will inevitably encounter the trouble that formaldehyde cannot be effectively removed. The preferred way to remove aldehydes is definitely ventilation, but on cold days, ventilation also means that it is blown by cold winds, and it is quite painful to be frozen at home.
Honeywell air disinfection machine has high efficiency in particulate matter and formaldehyde purification capacity, with the help of "HOX aldehyde removal speed net double technology", to achieve formaldehyde "adsorption + decomposition" two-in-one [1]. It can decompose formaldehyde into carbon dioxide and water, purifying indoor air. According to the performance report data, Honeywell air disinfection machine can effectively purify the indoor space of 39 to 67 m², which is not only suitable for removing aldehydes in the living room, bedroom and other places at home, but also suitable for office space.
App remote intelligent control
The purification effect is clear at a glance
Honeywell Air Sanitizers have a very clear display screen that allows users to monitor air quality data at any time.
You can also use it remotely. Even if people work and travel in the company, they can use the mobile phone App to operate remotely, set a variety of purification modes, and let the fresh and good air welcome you back.
This article is co-authored by experts
Guizang (Wu Xiaosheng)
Respiratory physician
This article is reviewed by experts
Jiang Yongyuan
Master of Respiratory Medicine, Third Military Medical University
bibliography
[1] Source: Comprehensive China Science and Technology Museum, China News Service
[2] Xie Jinyao, Lin Hai, Investigation of formaldehyde pollution in indoor air after renovation, ChinJPublicHealthApr-2005 V01. 21 No． 4,482-483
[3] GB 37488—2019 "Sanitary Indicators and Limit Requirements for Public Places"
[4] Causes, Prevention and Treatment of Pollen Allergy, Liu Zhihua
Planning and production
Curator: David | Producer: A mosquito
Illustration: Yu Mou, Ban Ni | Cover image source: Yu Mou