Antibodies against the coronavirus wane over time, but the immune system has a backup plan that doesn't rely on boosters, according to a study by scientists at the University of Pennsylvania, where...
from NDTV News - World-news https://ift.tt/3sViF3f
from NDTV News - World-news https://ift.tt/3sViF3f
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August 29, 2021
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