News Two COVID-19 vaccines are now authorized in the US; here’s what we know about them December 21, 2020December 21, 2020 Adrianna Rodriguez and Karen Weintraub, USA TODAY Comments Off on Two COVID-19 vaccines are now authorized in the US; here’s what we know about them Here's what we know about the Pfizer/BioNTech and Moderna COVID-19 vaccines and what they might mean for the war on the coronavirus pandemic.