BA.2 now responsible for a third of U.S. COVID-19 cases amid overall decline, data indicate

Reuters (3/22) reports, “About one-in-three COVID-19 cases in the United States are now caused by the BA.2 Omicron sub-variant of the coronavirus, according to government data on Tuesday that also showed overall infections still declining from January’s record highs.” Despite the “rise of the extremely contagious sub-variant also seen in other countries, U.S. health experts say a major wave of new infections here appears unlikely.” U.S. COVID-19 infections “have receded sharply since January, although a resurgence in parts of Asia and Europe have raised concerns that one will follow in the United States.”