New omicron subvariants are rising in U.S. and FDA panel gives its backing to Novavax vaccine
June 08, 2022 at 10:33 AM EDT
The BA.4 and BA.5 subvariants of the highly transmissible omicron variant of the coronavirus that causes COVID-19 are spreading rapidly, according to data from the Centers for Disease Control and Prevention, and may overtake others to dominate in the U.S.
