A new COVID-19 omicron subvariant, XBB 1.5, is quickly emerging as the dominant strain in confirmed cases across the U.S. The U.S. Centers for Disease Control and Prevention (CDC) reports that, as of January 7, nearly 40 percent percent of new cases nationwide are linked to the subvariant, which was … Continue reading COVID-19 omicron subvariant XBB 1.5 emerging as dominant strain in U.S.