(NBC News) Moderna’s Covid-19 vaccine is 94 percent effective at preventing symptomatic illness and appears to prevent the spread of the virus as well, according to documents released Tuesday.
The findings set the Moderna vaccine up for emergency use authorization by the Food and Drug Administration by the end of this week, meaning Americans could soon have two highly effective Covid-19 vaccines, after the first shots of Pfizer-BioNTech’s vaccine were given to health care workers on Monday.
The high efficacy of the Moderna vaccine was noted after two doses given 28 days apart. This is about the same level of effectiveness as the Pfizer vaccine.