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Antibodies Shield In opposition to COVID-19 Reinfection

April 2021

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After having COVID-19, most individuals’s our bodies develop antibodies to assist struggle it off. These are particular molecules made by the physique’s illness protection system, the immune system. A research discovered that individuals with these antibodies had been much less more likely to get COVID-19 once more.

Researchers checked out greater than 3 million individuals who had an antibody take a look at for SARS-CoV-2. SARS-CoV-2 is the virus that causes COVID-19.

They discovered that about 11% of individuals had SARS-CoV-2 antibodies. Greater than 88% had a unfavorable take a look at. And fewer than 1% of checks had been inconclusive.

The scientists checked out who got here down with COVID-19 after the take a look at. They analyzed as much as 30 days, 31–60 days, 61–90 days, and greater than 90 days after.

About 3% to 4% of individuals with unfavorable antibody checks acquired COVID-19 in every time interval. However those that had antibodies had been much less more likely to have COVID-19 as time went on. Solely 0.3% of the folks with antibodies had a constructive COVID-19 take a look at greater than 90 days after. These with out antibodies had been 10 instances extra more likely to get the illness.

The findings recommend that individuals who have a constructive outcome from an antibody take a look at could also be at decrease threat for future an infection with SARS-CoV-2.

NIH’s Dr. Lynn Penberthy, who led the analysis staff, explains that extra questions nonetheless have to be answered. “We’re nonetheless inspired by this early discovering,” she says.

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