Omicron subvariant XBB.1.5 behind 40% of US COVID cases
A 3D-printed coronavirus model is seen in front of a US flag on display in this illustration taken March 25, 2020. (DADO RUVIC / ILLUSTRATION / REUTERS) Over 40 percent of COVID-19 cases in the United States are now caused by the highly contagious Omicron XBB.1.5, data from the US Centers for Disease Control and […]