WHO says omicron BA.4 and BA.5 subvariants have spread to over a dozen countries
Another omicron subvariant called BA.2.12.1 has been detected in 23 countries, including the U.S., according to WHO.
U.S. News
Another omicron subvariant called BA.2.12.1 has been detected in 23 countries, including the U.S., according to WHO.
U.S. News