How to avoid clustered infection in the shivering epidemic in the office?

Are you already in the office?

Or on the way back to the office?

At present, “New Coronary Pneumonia” is still spreading. If one of your colleagues has a virus carrier, not only his colleagues around him may be infected, but the entire office building is facing the risk of cluster infection.

And what brings this risk is the central air conditioner we need now.

On February 2, at a press conference held by the National Health and Medical Commission, Zhang Liubo, chief disinfection expert of the Chinese Center for Disease Control and Prevention and director of the Disinfection Center of the Institute of Environmental Protection, emphasized that when an epidemic occurs, the central air conditioner should be shut down in time for disinfection, and the evaluation will be completed after passing the test. use.

Why can the virus spread through central air conditioning? Because virus transmission requires a carrier, the ventilation system of the central air conditioner creates favorable conditions for the transmission of bacteria and viruses. No matter which floor the confirmed case is on, the virus may spread to any location in the entire building through the central air conditioner. Central air conditioning can accelerate the spread of bacteria and viruses in indoor air.

Therefore, if you need to turn on the air conditioner, you should choose a split air conditioner that will not cause air circulation in each room, and have a special person to clean the air conditioner filter regularly. If there is only central air-conditioning system in the office area, it should be disabled as much as possible during the epidemic.

However, not all central air conditioners can no longer be used. For this reason, the Centers for Disease Control and Prevention issued the “Guidelines for the Operation and Management of Air Conditioning and Ventilation Systems in Offices and Public Places During the Epidemic of New Coronary Pneumonia” on February 12. With this “Guide” , you can know what kind of central air conditioning must not be turned on, what kind of can be turned on.

· Before using the central air conditioner, you should understand its type, the sanitary condition of the fresh air outlet, and the air supply range. Once you understand these conditions, most central air conditioners can be used.

· Part of the central air conditioner is an all-air system. The central air conditioner of the all-air system requires the return air to be turned off and run with fresh air.

· There are also some fan coil units plus fresh air system. This is the most important type of centralized air conditioner in my country. This type of centralized air conditioner requires that the air between each room should be independent. This kind of air conditioner with fan coil unit and fresh air system can be used, and the maximum fresh air should be turned on when using it.

In addition, the author also found a guide for the use of various air conditioners for your reference.

Some people may be curious, since it is risky to turn on the central air conditioner, so why not turn it on?

It is one aspect that it is very cold without the air conditioner. More importantly, many offices cannot be ventilated. You must know that in the prevention and control of all respiratory infectious diseases, strengthening ventilation is a very important principle. Virus transmission is most likely to occur in air circulation. Bad place.

In order to enhance indoor air circulation, the best way is of course to open windows, but many office buildings may not have the conditions to open windows, so this highlights the importance of the fresh air system, because opening the fresh air system is equivalent to opening windows ventilation.

For large office buildings, whether it is to turn on the central air conditioner or the fresh air system, these things are managed by the property management. However, for some sites, the degree of freedom is relatively high, and for some small offices, some fresh air equipment can be independently equipped.

In an environment like an office, it can also be useful to have a purifier by your side. Everyone should have heard of “aerosol transmission”. Although it has changed from confirmed existence to undetermined, there is a risk of virus transmission through the air. Experts such as Professor Li Houqiang of the Academy of Social Sciences of Sichuan University also wrote: Aerosol transmission does not require Panic, but worthy of attention.

The green droplets in the above picture are the “droplets” that have been popularized repeatedly, and the red ones are the “droplet nuclei”, that is, aerosols. Aerosol viruses are like small droplets, floating in the air in the form of particles, and the size of the particles determines how far the virus spreads, and the smaller the particles, the farther they spread.

Aerosols can be divided into two types, namely fly dust with a diameter of less than 10 microns and falling dust with a diameter of more than 10 microns. Therefore, as long as particles of this diameter can be filtered out, the virus in the air can be effectively defended.

Of course, you can’t take off your mask with these protections in place. In addition, in the office environment, we must also remember to wash our hands frequently, keep a distance of more than 1 meter from others, and more importantly, not to forget cough etiquette, which is not only respect for others, but also for others ‘s responsibility.

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