Why This ‘Very, Very Contagious’ Coronavirus Subvariant Is Causing Cases To Rise Again

The omicron subvariant BA.2.12.1 is poised to be the next dominant strain in the U.S. Mutations appear to have helped it replicate better and resist prior immunity.The omicron subvariant BA.2.12.1 is poised to be the next dominant strain in the U.S. Mutations appear to have helped it replicate better and resist prior immunity.Read More