Pfizer and BioNTech said its experimental vaccine was more than 90% effective in preventing COVID-19 based on initial data from a large study https://t.co/msASeH3yCo— Reuters Science News (@ReutersScience) November 9, 2020
Pfizer and BioNTech said its experimental vaccine was more than 90% effective in preventing COVID-19 based on initial data from a large study https://t.co/msASeH3yCo