http://www.newsweek.com/omicron-ba-2-found-states-ba-1-what-we-know-transmissible-1674907

The Omicron COVID sub-variant BA.2 has been detected in more than half of U.S. states as it continues to spread across dozens of countries.

BA.2 has become a major focus after rising rapidly in certain countries, particularly Denmark, where it now accounts for the vast majority of new cases and has outcompeted the previous Omicron sub-type BA.1, which has been the most common type worldwide, according to the World Health Organization (WHO).