A third COVID-19 vaccine will be available shortly as Novavax joins Pfizer/BioNTech and Moderna in targeting variants that are now circulating. The U.S. Food and Drug Administration on Friday authorized the updated version of the protein-based Novavax Covid-19 vaccine for use in people 12 and older. One week ago, the FDA approved the updated versions for Pfizer/BioNTech and Moderna, an mRAN. They are now available in some pharmacies. All these ...