XBB.1.5 strain, January 4, 2023, Suqian, Jiangsu, China. CFOTO | Future Publishing | Getty Images The XBB.1.5 omicron subvariant that’s currently dominating the U.S. is the most contagious versi...
XBB.1.5 strain, January 4, 2023, Suqian, Jiangsu, China. CFOTO | Future Publishing | Getty Images The XBB.1.5 omicron subvariant that’s currently dominating the U.S. is the most contagious versi...