As mask mandates lift in most states and coronavirus cases continue to drop, the “stealth” omicron subvariant, BA.2, is becoming more prevalent in the United States.
But what does this mean and is it a reason to worry amid easing virus restrictions?
Cases of this particular omicron subvariant, one of a few, keep popping up and have roughly doubled the past few weeks in the U.S., according to Centers for Disease Control and Prevention data estimates. It now makes up 11.6% of overall virus cases as of March 5.
