Pfizer-BioNTech vaccine appears effective against coronavirus variant found in Britain: study Ludwig Burger Bookmark Please log in to listen to this story. Also available in French and Mandarin. Log In Create Free Account Getting audio file ... This translation has been automatically generated and has not been verified for accuracy. Full Disclaimer GEORGES GOBET/AFP/Getty Images The COVID-19 vaccine developed by Pfizer and BioNTech is likely to protect against a more infectious variant of the virus discovered in Britain which has spread around the world, according to results of further lab tests released on Wednesday. The encouraging results from an analysis of blood of participants in trials are based on more extensive analysis than those released by the U.S. drugmaker last week.