Nearly 86% of U.S. COVID caused by BA.2 Omicron subvariant -CDC

The BA.2 Omicron subvariant of the coronavirus is now responsible for 86% of U.S. COVID-19 cases and more than 90% of infections in the Northeast, according to data on Tuesday from the U.S. Centers for Disease Control and Prevention (CDC). COVID-19 infections have been back on the rise during the last few weeks, particularly in Northeast states such as New York, Connecticut and Massachusetts, although overall cases have dropped sharply nationally since hitting record levels in January, according to data from the agency. A resurgence in COVID-19 cases in parts of Asia and Europe has raised concerns that another wave could follow in the United States, as has been the case with previous surges during the pandemic.