smartbook replied to a comment in

Promising Vaccine Trials Bring Hope To Coronavirus-Weary World

We DO know, it does work. According to New York Times, Moderna's works 90%, and Pfizer's 95%. if it was just at 50%, it would still be working, and pretty good. No vaccine has ever gotten to 100%. Flu vaccines work only 20%, yet we still take them.

About 5 years ago