Omicron variant.

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
Omicron found in 97 pc samples of deceased patients in Delhi from Jan to March
Rapid tests at home worry experts
Damocles sword: Hong Kong can’t live with the virus or stop it
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