On May 12, citing the KCNA report, North Korea found Omikron ba 2 mutant strain. It is reported that North Korea has taken measures to require local residents to observe at home because many people have suspected flu symptoms According to previous experts, this variant (Omicron ba. 2 variant) is better than the original variant ba The infectivity has increased by 30%, and the transmission power is stronger. If community transmission occurs, the number of infected cases can be doubled in 2 to 3 days.
At present, there are three subtypes of Omicron variant strain, which are ba 1、BA. 2、BA. 3。 Among them, Omicron ba 2 variant, also known as "invisible Omicron", because of its high infectivity, as early as February, the World Health Organization had warned to improve the understanding of Omicron's evolutionary branch ba 2.
Interestingly, before that, British scientists said that Xe could spread faster than ba 2 is still nearly 10% faster, but scientists are still studying this new variant.
Xe is known as the recombinant variant, that is, the two strains mix to form a new version, Omicron ba 1 and Omicron's "sister" ba 2.