A Covid-19 vaccine being developed by Pfizer and Germany’s BioNTech has been found to be more than 90 per cent effective, in a breakthrough that could make the shot available for use by the end of the year if drug authorities give it the green light.
The finding was the result of the first independent analysis of any Covid-19 vaccine in phase 3 trials — the final stage before commercial licensing. Out of the 43,000 trial participants, the small number who were infected enabled the independent evaluators to calculate the effectiveness after two doses.
“To me, this is the best possible outcome,” Ugur Sahin, co-founder and chief executive of BioNTech told the Financial Times, while Pfizer boss Albert Bourla said it was “a great day for science and humanity”.