Omicron variant.

Omicron's new sub-variant detected in Delhi
Covid surge in 3 Kerala districts; Minister says 'no need for worry'
Cases of B.A. sub-lineage of Omicron found in Maha for first time
One case of BA.4 sub-lineage of Omicron reported in TN
South Korea reports 25,125 new Covid-19 cases
Every Covid infected person infecting two others: IIT-Madras analysis
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