Recently, the World Health Organization introduced two new autovariants of Omicron ba 4、BA. 5 has been included in the detection list, Xe recombinant virus has also accelerated the spread all over the world, and XD, XL and other strains have also appeared one after another.
“Intense and short-lived” outbreak——Africa to suppress Omicron in 5 months. The African country of South Africa was the first country in the world to discover and report the Omicron strain. In November 2021, South Africa first reported the Omicron variant to the World Health Organization (WHO).
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