Omicron subvariant BA.2 will soon dominate in the U.S: Here’s what you need to know about it.

An Omicron subvariant, known as BA.2 is estimated to become dominant in the U.S. in the coming weeks.
BA.2 is at least 30% more transmissible than its cousin BA.1, and it has been driving new COVID-19 surges in the U.K. and other European countries.