Latest research: Immunity can be maintained for at least 1 year after being infected with the new crown

Immunity to the new coronavirus is essential to control the new coronary pneumonia pandemic, protect individuals from serious diseases, and control the spread of the virus
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A key question is how long can immunity against the new coronavirus last? According to the latest article published on the website of "Nature" on the 14th, scientists studied 63 individuals who had been infected with the new coronavirus and recovered (hereinafter referred to as "recovered persons") and found that they were immune to the new coronavirus 12 months after being infected.

At present, scientists generally believe that the two main pillars of the antiviral immune response are immune cells called "cytotoxic T cells" and neutralizing antibodies
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The third pillar is the production of helper T cells, which are virus-specific cells that coordinate the immune response

This time, scientists studied whether the immune response to the new coronavirus will produce long-lived memory plasma cells
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Researchers are trying to identify memory plasma cells that secrete antibodies in the bone marrow of patients who have recovered from the new coronary pneumonia
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Memory plasma cells for specific pathogenic factors are extremely scarce

Further research found that the concentration of neutralizing antibodies remained the same in these recovered patients 6 to 12 months after being infected
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The analysis of memory plasma cells in the blood of recovered patients shows that the acute immune response can even last for more than 6 months

Studies have also shown that by vaccinating 41% of survivors one year later with mRNA vaccines, the immunity of these people can be further improved
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They produced more plasma cells in their bodies, their antibody levels increased, and their immunity was 50 times higher than before vaccination

According to the report, the good news is that the evidence so far shows that most people who have been infected with the new coronavirus can develop long-term immunity
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After vaccination, the immunity of these individuals is further enhanced