SARS-CoV-2 Variants of Concern in the United States—Challenges and Opportunities

On January 10, 2020, the first genomic sequence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) isolated from a patient in Wuhan, China, was posted online. As of February 3, 2021, 468 000 sequences of SARS-CoV-2 from COVID-19 cases globally have been uploaded into publicly available databases, including more than […]