The BA.2 subvariant is now 72 percent of new Covid cases. Experts say don’t panic. 

The BA.2 subvariant of the omicron variant continues to rapidly spread throughout the U.S., now accounting for about 72 percent of all new Covid-19 cases, according to data from the Centers for Disease Control and Prevention. The new CDC estimate is up from about 55 percent a week ago, when the subvariant, […]