Is the virus protected by throat swab virus preservation solution really fragile

At present, in many areas of the national nucleic acid testing, the swab virus preservation solution is added in advance in the sampling tube to prevent the virus degradation from causing false negative. Because many times the sampling point does not have the conditions for timely detection, the virus is very fragile, and the virus will degrade in a short period of time, leading to no detection.

On the other hand, a lot of Internet news makes us feel that the virus is very stubborn and difficult to eliminate. Before there was "oral disinfectant" farce, let us clearly know that drinking disinfectant directly can not kill the virus, but will cause harm to the body. There are also various so-called anti-virus tricks in China, such as chlorination of tap water, smoking, drinking, mask spraying disinfectant, sweat sauna disinfection and so on. All the above methods are wrong and can not kill the virus.

It seems contradictory that the virus is sometimes fragile or stubborn. To understand this problem, we need to have a basic understanding of the characteristics of the virus and the host cell of the virus.

Swab virus preservation solution

Biological virus:

The virus here refers to biological virus, which is composed of a nucleic acid molecule and protein or only composed of protein. The individual is small and the structure is simple. The common epidemic diseases are RNA virus, such as influenza virus, HIV and influenza A virus. The virus has no cell structure and can not replicate itself. Instead, it invades the host cell and replicates new virus with the help of the latter replication system.

Host cells of virus:

Viruses can only live in the cells, but not outside the cells for a long time. Usually, animal viruses are parasitic on animal cells, plant viruses are parasitic on plant cells, and of course, viruses parasitic on fungi and bacteria. Cell is the basic structural and functional unit of organism. Whether it is animal, plant or fungus, it is composed of multiple or single cells. We all know that cell morphology is extremely small, usually need to use a microscope to see, we also know that the virus is very small, is a microorganism, but the specific relationship between virus and cell is very few people know.

The ratio of virus to cell size was as follows

Although the cell is small, its internal structure is complex. There are various organelles in the nucleus and cytoplasm. If the virus is the size of a person, the cell is a super department store. The organelles are the various areas in the building. The virus is just a person hiding in a room in a certain area. If a simple drinking disinfectant or heating disinfection, it means that the cell building is destroyed first, then the cells and tissues and organs are destroyed.

The time of virus sampling is different. After sampling, the host cell of the virus rapidly decays, and the virus leaves the cell building, which is equivalent to throwing people into the wild without eating or drinking and dying soon. Therefore, it is necessary to add virus preservation solution to protect the virus samples collected by swabs.

After the epidemic subsided and the work resumed, Desheng immediately took action to ensure the supply of virus preservation solution in the market. There are two kinds of virus preservation solution for swab: one is the inactivated type, which protects the nucleic acid of the virus; the other is the non inactivated type, which protects the integrity of the whole virus. You can choose according to the needs of detection.