http://www.newsweek.com/omicron-ba-2-covid-variant-75-percent-american-cases-cdc-1695128

The Omicron COVID sub-type BA.2 has been detected in 72.2 percent of COVID samples sequenced in the U.S., according to the most recent estimates from the Centers for Disease Control and Prevention (CDC).

That marks a significant increase from last week's data, when BA.2 was estimated to account for 57.3 percent of samples—revised upwards from 54.9 percent.