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Home » Study: Natural COVID-19 Immunity Offers Good Protection Against Serious Disease
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Study: Natural COVID-19 Immunity Offers Good Protection Against Serious Disease

By Spencer BallardFebruary 22, 2023No Comments0 Views
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Previous COVID-19 infection provides strong and long-lasting protection against severe disease, according to a new study.

The research, published Thursday in the journal The Lancet, reviewed 65 studies on natural immunity to find that the average effectiveness was at least 88% against hospitalization and death for all coronavirus variants 10 months after infection. The research did not include omicron subvariant XBB.1.5, which is dominant in the U.S.

But natural immunity provided substantially reduced protection against symptomatic infection against omicron subvariant BA.1 at 10 months, mounting about a 36% efficacy.

The researchers emphasized that the data should not be used to discourage vaccination, which they said in a better way to acquire protection against COVID-19.

“Vaccination is the safest way to acquire immunity, whereas acquiring natural immunity must be weighed against the risks of severe illness and death associated with the initial infection,” lead author Stephen Lim from the Institute for Health Metrics and Evaluation at the University of Washington’s School of Medicine said in a statement.

The authors suggested that the data could be used for guidance on when individuals should get vaccinated.

“Vaccines continue to be important for everyone in order to protect high-risk populations such as those who are over 60 years of age and those with comorbidities,” study author Caroline Stein said in a statement. “This also includes populations that have not previously been infected and unvaccinated groups, as well as those who were infected or received their last vaccine dose more than six months ago. Decision makers should take both natural immunity and vaccination status into consideration to obtain a full picture of an individual’s immunity profile.”

A recent study led by the World Health Organization found that hybrid immunity – the mix of protection provided by COVID-19 vaccination as well as infection – offers the highest level of protection. It was 97% effective at preventing hospitalization and severe COVID-19 among fully vaccinated individuals a year after their most recent infection or vaccination.

It also found that for those with previous infection and no vaccinations, effectiveness against hospitalization and severe disease was nearly 75% a year out, while protection against infection was less than 25%.

“The analysis shows that hybrid immunity provides higher protection, demonstrating the advantages of vaccination even after people have had COVID-19,” WHO said in a statement.

Source: us news

Covid-19 vaccinations healthcare news US Vaccine
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Spencer Ballard

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