Posted on Dec 13, 2020
NIH director asks Americans to leave 'conspiracy theories' behind on vaccines and 'look at the...
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Coronavirus COVID19
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But what does this statement mean - "It also found that only one shot provides about 50 percent immunity from Covid-19"?
immunity - noun:
the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.
immunity - noun:
the ability of an organism to resist a particular infection or toxin by the action of specific antibodies or sensitized white blood cells.
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It means the immune response produced by one shot may not be sufficient to completely fend off an infection, or an asymptomatic spread but there is some underlying data to support increased effectiveness with a second vaccination. No vaccine in history has been 100% effective 100% of the time.
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