There has been a cautiously optimistic reaction from medical experts after Pfizer said its experimental vaccine was more than 90% effective in preventing Covid-19 based on initial data from a large study.
The development marks a major victory in the fight against the pandemic. Pfizer and German partner BioNTech SE are the first drug-makers to show successful data from a large-scale clinical trial of a coronavirus vaccine.
Medical, scientific and business figures have all been reacting to the news John Moore, Professor at Weill Cornell Medical College, New York City "I can see nothing problematic." As for what this means for other vaccines, Prof Moore said:"Moderna's is likely to work as well given the similar design and performance, and