July 14, 2020

How to prevent new coronaviruses?

I am afraid that the most important issue in recent days is how to prevent new coronaviruses. This article mainly brings you the time that the virus can survive the host and the ultraviolet disinfection method.
As an ordinary person, our knowledge of this virus is very limited, we can only listen to the recommendations of medical experts. Experts tell us that this virus causes a new type of pneumonia, and one way to prevent it is to wear a mask. Wearing a mask means that the new coronavirus can be spread through the air, and wearing a mask can effectively isolate the virus in the air. So, how long can the new coronavirus survive in the air? How to kill the virus in the air is related to the prevention effect. UV dosimeter is used to test the UV doso( UV irradiation intensity).
Viruses and bacteria are the enemy of our health, but viruses and bacteria are very different. The biggest difference is that bacteria have autonomous self-reproduction capabilities, but viruses do not. Once the virus leaves the host, it is easy to lose activity and eventually lose its harmfulness. That is to say, the virus needs a carrier to spread. Once it is separated from the original host, if it does not find a new host, it will lose its ability to infect within a certain period of time. Gao Fu, director of the Chinese Center for Disease Control and Prevention and an academician of the Chinese Academy of Sciences, believes that the new coronavirus is an enveloped virus and has poor adaptability to the in vitro environment and will die in less than 30 minutes. But this is also a speculation by experts, without scientific experiments and accurate data as support. Of course, this is the survival time of the new coronavirus in the air, and in actual life, the virus will not float in the air forever, most will still be attached to the surface of the object. So, how long can the surface attached to the object survive?
For this problem, there is currently no data specifically for the new coronavirus, because there is not enough time to conduct sufficient research. You can also refer to the survival time of similar viruses. Under normal circumstances, the same type of enveloped virus, such as SARS virus, can survive for a maximum of 6 hours in a dry state and a maximum of 24 hours in a humid state. They are all capsular structures, and it is estimated that the new coronaviruses are similar. Give the experts some time, I believe they will know soon.
At the same time, let me tell you some characteristics of the new coronavirus, which can also be said to be its weaknesses, which is more conducive to its prevention. The new coronavirus is afraid of high temperature, as long as the temperature reaches 56 degrees, it will lose its activity in 30 minutes, and there is no harm; secondly, the new coronavirus is afraid of disinfectants. In general, it can be killed with 75% medical alcohol Of course, 84 disinfectants and some chlorine-containing disinfectants are possible. In addition, the new coronavirus is afraid of ultraviolet rays, and it can also kill it after being irradiated with ultraviolet rays.