Tag Archives: Pfizer vaccine only slightly less effective against key South African mutations – study

NEW YORK: Pfizer Inc and BioNTech’s COVID-19 vaccine appeared to lose only a small bit of effectiveness against an engineered virus with three key mutations from the new coronavirus variant found in South Africa, according to a laboratory study conducted by the U.S. drugmaker. The study by Pfizer and scientists from the University of Texas Medical Branch (UTMB), which has …

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