What are XE mutants?XE is a mutant resulting from recombination of BA.1 (original Omicron strain) and BA.2 (Omicron "stealth" strain), and is referred to as a "recombinant" or hybrid strain. And a "variant" is a version of a virus that contains a set of mutations, or changes in its genetic material.

Performance of antibody rapid detection kit in resistance to Omicron. We're talking about Omicron today. If it is a less severe variant, why are people still ending up in hospitals and why is it still killing people?