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San Diego researchers find that COVID survivors have long-term immunity to reinfection



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Novel Coronavirus
Electron microscope image of a new strain of coronavirus.Provided by NIAID-RML

A new study conducted by researchers at the La Jolla Institute for Immunology found that almost all COVID-1

9 survivors retain immune cells that can fight reinfection for at least eight months or even longer.

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The conclusions drawn from the analysis of blood samples of 188 COVID-19 patients indicate that the human immune system’s response to the virus can last for at least eight months after the onset of the initial symptoms of infection.

Dr. Alessandro Sette co-led the study with Dr. Shane Crotty and research assistant Dr. Daniela Weiskopf. He said: “Our data shows that there is an immune response, and it has been there.”

Crotty said: “We measured antibodies, memory B cells, helper T cells, and killer T cells at the same time.” “As far as we know, this is the largest study ever for acute infections, and the study has already measured All four components of immune memory.”

The findings, published in the online edition of Science on January 6, indicate that COVID-19 survivors may have protective immunity to the coronavirus months or even years after infection.

The research team warned that protection against immunity varies from person to person. People with weak immune systems and memory may be more likely to contract recurrent COVID-19, or more likely to infect others.

Crotty said: “Some people are at a low point in terms of how much immune memory they have. Maybe these people are more susceptible to reinfection.”

Researchers will continue to analyze samples from COVID-19 patients in the next few months and hope to track their reactions 12 to 18 months after the onset of symptoms.

The La Jolla Institute for Immunology was established in 1988 as an independent non-profit research organization whose goal is to achieve a disease-free life.

San Diego researchers find that COVID survivors have long-term immunity to reinfection Last modified time: January 10, 2021 by Chris Janevin

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