Pfizer/BioNTech vaccine effectiveness drops after 6 months

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Pfizer/BioNTech COVID-19 vaccine

Pfizer/BioNTech COVID-19 vaccine effectiveness drops after 6 months, study shows

The effectiveness of the Pfizer Inc (PFE.N)/BioNTech SE vaccine in preventing infection by the coronavirus dropped to 47% from 88% six months after the second dose, according to data published on Monday that U.S. health agencies considered when ..

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