The U.S. Vaccine Campaign Has Started
The U.S. began vaccinating people on Monday, which was shortly after the Food and Drug Administration authorized the vaccine made by Pfizer and BioNTech for emergency use. The data to evaluate the vaccine came from a a double-blinded, placebo-controlled, and randomized clinical trial involving more than 44,000 volunteers in the country ages 16 and older. Although the trial is still ongoing, data demonstrated that the two-dose vaccine appeared to be 95% effective at preventing symptoms of covid-19 a week after the second dose was administered.
