Research shows that COVID-19 antibodies can prevent re-infection in the future

There is new evidence that the COVID-19 antibody positive for a previous infection will greatly reduce the risk of re-infection in the future.
A study published Wednesday in the journal JAMA Internal Medicine found that people who tested positive for COVID-19 had a reduced risk of coronavirus infection compared to those who tested negative for antibodies.
Dr. Douglas Lowy said: “The results of this study are basically reduced by a factor of 10, but I have some caveats about this. In other words, this may be an overestimation of the reduction. This may be true. The underestimation of the reduction.” is the author of the study and the chief deputy director of the National Cancer Institute.
He said: “For me, the biggest message is-reduced.” “The main takeaway is that positive antibodies after natural infections are partly related to preventing new infections.”
Lowy added that people who have recovered from COVID-19 should still be vaccinated when it is their turn.
Researchers from the National Cancer Institute and companies such as LabCorp, Quest Diagnostics, Aetion Inc. and HealthVerity studied the data of more than 3.2 million people in the United States who completed COVID-19 antibody testing between January and August last year. In these tests, 11.6% of COVID-19 antibodies were positive and 88.3% were negative.
In follow-up data, the researchers found that after 90 days, only 0.3% of people who tested positive for COVID-19 antibodies eventually tested positive for coronavirus infection. Among patients with negative COVID-19 antibody test results, 3% were later diagnosed with coronavirus infection during the same period.
Overall, this study is observational, and it shows an association between a positive COVID-19 antibody test result and a reduced risk of infection after 90 days-but more research is needed to determine the causality and how long the antibody is protected Last long.
Roy said more research is needed to determine the risk of reinfection caused by one of the emerging coronavirus variants.
Lowe said: “Now there are these concerns. What do they mean? The shortest answer is that we don’t know.” He also emphasized that people who test positive for antibodies should still be vaccinated against COVID-19.
It is well known that most patients recovering from COVID-19 have antibodies, and so far, reinfection seems to be rare-but “how long will the antibody protection last due to natural infections” remains unclear,” NYC Health’s Dr. Mitchell Katz + Hospital’s health care system wrote in an editorial that was published in conjunction with the new research in JAMA Internal Medicine.
Katz wrote: “Therefore, regardless of the antibody status, it is recommended to get the SARS-CoV-2 vaccine.” SARS-CoV-2 is the name of the coronavirus that causes COVID-19.
He wrote: “The duration of antibody protection provided by vaccines is unknown.” “It is necessary to know how long the protection of antibodies lasts due to natural infection or vaccination. Only time will tell.”
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