COVID XBB.1.5: New Omicron subvariant accounts for over 40% of new cases in US
India | December 31, 2022 23:43 ISTCOVID-19 BF.7 updates: The omicron subvariants XBB and XBB.1 were first identified in India. Some scientists, including Scripps Research Institute professor of molecular medicine Eric Topol, have put forward the possibility that XBB.1.5 could have mutated in New York.