Over the past few months, most COVID-19 cases in the U.S. have been Omicron subvariants BA.4 and BA.5. But now, a group of new COVID-19 subvariants is becoming more common, and one of them is getting a lot of attention. It is called XBB or Gryphon, and there is a chance that it could take over everything else.
The new COVID-19 subvariant XBB, which is spreading quickly, is part of a “new class” of Omicron
