The World Health Organization designated Omicron (B.1.1.529) as a variant of concern on November 26, three days after the genome sequence was deposited in a public database by South Africa and Botswana. Based on genome sequence data, scientists have identified a sub-lineage —BA.2—of Omicron. As a result, the Omicron variant has been split into two sub-lineages, namely BA.1, “for the original globally-distributed lineage”, and BA.2, “for the new outlier lineage”. (Read More)
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