The coronavirus mutant widely known as “ stealth Omicron ” is now causing more than a third of new Omicron infections around the world, but scientists still don’t know how it could affect the future of the pandemic....
Researchers are slowly revealing clues about the variant, a descendant of Omicron known as BA.2, while warily watching it become ever more prevalent....
Wesley Long, a pathologist at Houston Methodist in Texas. This week, a technical advisory group for the World Health Organizat
综合
洛杉矶时报-世界与民族
2022-02-24 00:00:00.0