US FDA authorizes Pfizer-BioNTech and Moderna's updated Covid shots

The FDA has authorized updated Covid-19 vaccines from Pfizer/BioNTech and Moderna that target the Omicron variant. A third shot from Novavax is still under review. Pfizer and Moderna's updated vaccines are expected to be available soon for most people in the US. The FDA approval follows a rise in cases of the EG.5 subvariant of Omicron.