The effectiveness rate of a coronavirus vaccine from Sinovac at preventing symptomatic infections has been found to be as low as 50.4%. By comparison, the vaccine made by Pfizer has been found to be 97% effective.
from The Hindu - International https://ift.tt/3d85PIE
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Sunday, April 11, 2021
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» In a rare admission, Chinese official says home-grown vaccines’ effectiveness low
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