XEC,一个omicron变体的亚支系欧米伽变种的亚线。, was first reported in Berlin, Germany, in Jun and is now spreading "quite rapidly" acrossEurope, North America and Asia, according to Covid data analyst Mike Honey.
So far, over 500 samples from 27 countries, including Poland, Norway, Luxembourg, Ukraine, Portugal and China, have been found to contain XEC.