Covid-19 Vaccines May Be Less Effective Against Omicron, Says WHO
WHO said that more data was needed to understand the extent to which Omicron may evade immunity derived from either vaccines or previous infection.
from Top India News- News18.com https://ift.tt/3F0fYSW
from Top India News- News18.com https://ift.tt/3F0fYSW
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