NEW YORK/TOKYO -- The omicron BA.2 subvariant of the coronavirus is rapidly spreading across much of the world, now accounting for a majority of new COVID-19 cases in the U.S. after overrunning some countries in Asia and Europe.
BA.2 was responsible for virtually all new COVID-19 cases in India, as well as more than 90% in the U.K. and Vietnam and around 45% in Japan, according to recently reported figures in the outbreak.info database. It has also become the dominant version of the coronavirus in the U.S., accounting for around 55% of new cases, according to the Centers for Disease Control and Prevention .
