Why Some COVID-19 Cases Show No Symptoms

Updated: Aug 7, 2020

Scientists have explained COVID-19 cases that are asymptomatic or very mildly overcoming the disease with no symptoms. According to scientists, what prevents them from showing signs of illness; T cells.

The qualities of people in the high-risk group since the coronavirus outbreak began are known; People with chronic illnesses such as obesity patients, cancer patients, lung and kidney diseases, people 60 years and older. However, the qualities of people who do not show any signs of COVID-19 are unknown. This requires further research on asymptomatic COVID-19 cases.

According to a report published in CNN International, researchers have recently scrutinized T cell reactivity to find common points of asymptomatic COVID-19 cases. Apart from antibodies, T cells, which are another weapon of our body to fight infections, target host cells that contain viruses instead of directly attacking viruses.

"T cells do not protect against coronavirus."

Regarding the fight against coronavirus with T cells, "We don't know if they are useful, but we think it's reasonable to think they might be useful." Scientists say that these cells do not adequately protect against the virus, but fight infection faster.

According to scientists, T cell reactivity is directly linked to how you can overcome COVID-19 disease. Because T cells go into such a hard fight with the virus that when you get the infection, you only have a severe cold instead of being taken to intensive care.

T cells can help slow the rate of spread of coronavirus.

According to scientists, half of the people who do not get coronavirus have T cell reactivity. Therefore, even if a large part of the society catches the virus, the disease survives itself as an asymptomatic case.

Explaining what this information means for coronavirus vaccine studies, scientists have stated that they assume that T cells will not protect against the virus, that it will be an asymptomatic case not only to understand that a person has the disease and that the probability of transmitting it to others will decrease as the number of viruses in the body decreases.

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