
The U.S. May Soon Have a Third Vaccine. Here's How It Works.
As the Biden administration works to accelerate the U.S. coronavirus vaccine rollout, it could soon have a new tool: A single-dose vaccine that can survive up to three months in an ordinary refrigerator. Manufacturer Johnson & Johnson released data on January 29 showing that its single-dose version provided strong protection against COVID-19. On February 24, the U.S. Food and Drug Administration released an analysis of Johnson & Johnson’s vaccine confirming that it is safe and effective, and on February 26 a review committee within the agency recommended that the FDA authorize the shot for emergency use.