Home » Why are infections soaring but the death toll is limited? Research shows that T cells can prevent Omi Keron from causing severe illness-IT & Health-cnBeta.COM

Why are infections soaring but the death toll is limited? Research shows that T cells can prevent Omi Keron from causing severe illness-IT & Health-cnBeta.COM

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After Christmas, the number of new confirmed cases of new crowns in a single day across the world hit a record high, and the United States added 500,000 confirmed cases in a single day. Omi Keron has become the main strain of the new crown epidemic. High infectivity has led to a surge in confirmed cases, but at the same time the number of deaths has been declining. US federal officials pointed out that the Omi Keron mutant strain causes less harm than other types of viruses.

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According to research conducted by Erasmus University in the Netherlands and Cape Town University in South Africa,Of the vaccinated personT cells can provide a strong defense against Omi Keron mutant strains, which may help prevent serious illness, hospitalization, and death. This finding can help explain why the soaring number of infections from South Africa to the United States and the United Kingdom has not led to a significant increase in deaths so far.

According to research, scientists speculate that the cause of the outbreak of Omi Keron virus in many countries is that it can cleverly evade antibodies. However, antibodies are not the only important role for the body to resist viruses. T cells also have their own role. When the antibody fails, T cells will serve as an effective substitute.

After the cell is infected by the coronavirus, T cells can learn to recognize the viral protein fragments that eventually appear on the outer surface of the cell. The T cell then kills the infected cell, or reminds the immune system to launch a more powerful attack on the virus.

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Immunologist Dr. Alessandro Sette of the La Jolla Institute of Immunology and Andrew Redd of the National Institutes of Health reported that although Ome Keron virus has many mutations, most of the protein fragments recognized by T cells are different from other variants. The protein fragments are the same.

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Researchers in the Netherlands conducted a study on 60 vaccinated health care workers and found that although they have a lower or non-existent antibody response to Omikron compared with Beta or Delta strains, T cell response There is basically no change, which may balance the lack of neutralizing antibodies in terms of preventing or limiting severe illness.

Research by the Institute of Infectious Diseases and Molecular Medicine at the University of Cape Town observed patients who had recovered from the new crown or who had been vaccinated by Pfizer or Johnson & Johnson. They found that 70-80% of the T cell responses evaluated could resist Omi Keron.

Fauci, a top American infectious disease expert, warned that even if it proves that Omi Keron is indeed less dangerous than Delta, the number of cases may still exceed the hospital’s capacity and cannot be taken lightly.

It is worth mentioning that one of the economic trends that Goldman Sachs deduced based on the potential impact of Omi Keron is that Omi Keron spreads slightly faster, but the severe illness rate and fatality rate are lower. During the gradual recovery of the economy, the burden of the epidemic has generally shown a downward trend, further boosting confidence in recovery, and economic growth may exceed Goldman Sachs’ previous expectations. As global demand rebalances and the supply of goods and labor accelerates recovery, the level of inflation may gradually decrease.

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