Wednesday, October 20, 2021

Antibodies persist for more than a year after COVID-19 infection, study finds

According to a peer-reviewed study accepted by the European Journal of Immunology on September 24, the immune systems of most people infected with the CCP virus will continue to take antibodies against the virus for at least 12 months.

Scientists from the Finnish Institute for Health and Welfare studied the presence of antibodies in 1,292 subjects eight months after infection. They found that 96 percent of the subjects still carried neutralizing antibodies and 66 percent still carried a type of antibody called nucleoprotein IgG.

The scientists then examined antibody levels a year after infection, randomly selecting 367 subjects from the original group who had not yet been vaccinated. Eighty-nine percent of subjects still carried neutralizing antibodies, and 36 percent still carried IgG antibodies.

Antibody levels were higher in subjects who experienced severe COVID-19 illness. These subjects had two to seven times more antibodies for at least 13 months after infection, compared with those who had mild illness.

“Study of individuals who have recovered [CCP virus] Infections are important in determining how long antibodies persist after infection and whether these antibodies protect against reinfection,” the scientists wrote (PDF).

Despite lasting protection against wild-type CCP virus, the study found that neutralization efficiency against alpha, beta and delta variants decreased over time. The reduction in efficiency was “significantly less” for the beta version and “only slightly less” than for the alpha version. For the delta variant, which is the dominant strain in the United States, the study found that 80 percent of subjects still had immune protection 12 months after infection.

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A study published in Nature Medicine in May found that levels of neutralizing antibodies in a person are highly predictive of immune protection against infection and severe disease caused by the CCP (Communist Party of China) virus, commonly known as the novel coronavirus. Known as coronavirus. Earlier studies have shown that antibodies persist for 6 to 12 months after infection.

Despite strong and lasting protection after infection, the CCP virus vaccine mandate in the United States does not provide any exemptions based on acquired immunity. The Epoch Times review of vaccine mandates for US colleges and universities found that not a single school was exempting students who had acquired immunity. Recent mandates imposed at the state and federal levels also disregard earned immunity.

Nation World News Desk
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