2 Pfizer COVID-19 shots 95% effective in preventing infection - study
This new study, which reported on national data for the first time, indicates that vaccines can help control the pandemic.
A healthcare worker hands over doses of the Pfizer-BioNTech COVID-19 vaccine to a doctor at Messe Wien Congress Center, which has been set up as coronavirus disease vaccination centre, in Vienna, Austria February 7, 2021.(photo credit: REUTERS/LISI NIESNER/FILE PHOTO)ByMAAYAN JAFFE-HOFFMAN
