COVID-19 Antibodies May Prevent Reinfection of the Virus
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A newly published study reveals that testing positive for COVID-19 antibodies can lower the risk of being reinfected with the virus.
The news study published in JAMA Internal Medicine discovered that those who tested positive for antibodies have a smaller chance of infection than others who tested negative.
The study included 3.2 million patients in the United States who completed a COVID-19 antibody test. Of those patients, 11.6% tested positive and 88.3% tested negative.
As a result, only 0.3% of those tested positive for COVID-19 antibodies faced infection after 90 days, and 3% of those with negative antibody results met infection.
“The results from the study are basically a 10-fold reduction, but I would have caveats around that. In other words, it could be an overestimate of the reduction. It could be an underestimate of the reduction,” Dr. Douglas Lowy, principal deputy director of the National Cancer Institute, said.
“The main takeaway is that being antibody positive after natural infection is associated with partial protection against a new infection.”
It is still recommended for those who recovered from COVID-19 to get the vaccine.
Dr. Mitchell Katz of NYC Health and Hospitals said that it is unknown how long the protection COVID-19 antibodies will last due to natural infection.
“For this reason, vaccination against SARS-CoV-2 is recommended regardless of antibody status,” Dr. Mitchell Katz of NYC Health and Hospital said.
It is also unknown how long the protection of the new vaccines will last after being administered.