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Omicron BA.2 gains dominance from India to U.S.

Coronavirus subvariant's rapid spread has not produced a spike in deaths

A woman takes a COVID-19 test in New York City. The BA.2 subvariant is now responsible for more than half of new cases in the U.S.   © Reuters

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 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 .

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