Pfizer, BioNTech not sure on vaccine effectiveness on new Covid variant Omicron - Sarahindustan

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Saturday, November 27, 2021

Pfizer, BioNTech not sure on vaccine effectiveness on new Covid variant Omicron

The pharmaceutical companies underscored that they started working on making their vaccine adaptable to new possible variants months ago.

from Zee News :India National https://ift.tt/3CWci34

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