Researchers have directly infected some people, and an important thing about the covid has been revealed

Researchers have repeatedly struck how it is possible that some people may have been infected with a coronavirus more than once, while others seemingly do not, or even spectacularly, almost avoid it.

New research this time points to a number of well-distinguishable conditions in the process, writes

The role of T cells

Based on the results of the researchers so far, it appears that T cells present in the body and associated with other coronavirus infections are responsible. Such a condition could be, for example, a common cold, which is also caused by a coronavirus in 20 percent of cases. Experts believe that the higher the number of T cells, the greater the chance that they will not be infected with a coronavirus.

Vaccines

It has long been known that vaccines have a serious they have a role to play in curbing the epidemic. However, according to Andrew Freedman, a researcher at the University of Cardiff, vaccination or immunity acquired through illness can also explain why some people do not get the disease.

Genetics

According to researchers at Imperial College, the severity of a person’s genetics depends on how severe it is. Within this, the Human Leukocyte Antigen, may be very important. some of which increase while others reduce the severity of the disease. The role of the genes has been confirmed by another study, as Polish scientists have found a gene that more than doubles the chances of a severe course of coronavirus disease.

Photo: AFP

What is the role of the tests?

A new experiment also yielded interesting results. 36 healthy adults undertook to voluntarily expose themselves to coronavirus infection, but only half of the participants became infected. Volunteers dropped a small dose of virus into the nose and then monitored the results. 16 people produced mild to moderate symptoms such as runny nose, sneezing or sore throat.

It was an interesting development that 18 of the infected the latency of the virus was less than previously measured , 42 hours instead of 5-6 days. Subsequently, the virus was present in increasing amounts in the body, this indicator peaked 5 days after infection, but was still detectable on the 12th day after the illness.

The other notable result in the virus appearing earlier in the throat than in the nose. Therefore, if tested nasally only in the early stages of the disease, there may be a risk of not noticing the infection.